Best Food Supplements for Skin: Research-Proven Ingredients You Need to Know

Vegan collagen supplements reduce wrinkles by an impressive 27.5%, improve skin texture by 20.1%, and shrink pores by 12.3% compared to placebo groups. These supplements rank among the best food supplements for skin available today . In fact, these plant-based formulations boost collagen density by 4.7% and increase skin elasticity by 5.1%, which gives visible results for people seeking youthful skin .

People searching for effective skin health supplements should think about ingredients backed by science. Studies show that over 40% of people look for products that promise brighter skin . Vitamin C and Vitamin E are significant components of skin health. Vitamin C boosts collagen production and reduces fine lines and wrinkles. Vitamin E maintains skin health and strengthens the immune system . The best skin supplements combine these vitamins with powerful botanical extracts that hydrate, rejuvenate, and brighten the skin by 4.3% . This detailed analysis gets into the research behind these ingredients to help you find supplements that deliver real results.

Understanding the Root Causes of Skin Aging

Your skin ages through complex biological processes that change its structure at the cellular level. Learning about these mechanisms helps us understand how skin health supplements can target aging at its source.

Collagen loss after age 25

Your skin's support system starts breaking down earlier than you might think. By age 25, you lose about 1% of your collagen each year ^[1]. This happens because the cells that make collagen slow down as you get older ^[1]. The result? Your skin's internal structure changes, which leads to less firmness and more wrinkles ^[1].

You can spot several signs that show your collagen levels are dropping:

• Skin looks dry and dehydrated

• Expression lines and wrinkles become more obvious

• Skin loses its fullness and plumpness

• More sagging and less firmness

• Skin loses its "bounce" and elasticity ^[1]

Other signs include skin that looks thinner, hollow areas around your eyes, changes in face shape like narrower temples, and even weaker nails and hair ^[1]. The truth is, your skin's youthful structure starts declining in your mid-twenties, often before you can see any changes ^[1].

Women face even bigger challenges due to hormones. The first five years of menopause can reduce collagen levels by up to 30%. After that, levels keep dropping by 2% every year for the next 15 years ^[1]. This explains why finding the best supplements for skin becomes crucial during perimenopause and beyond.

Effect of UV exposure and oxidative stress

UV radiation affects your facial aging more than anything else - it's behind about 80% of visible aging signs ^[2]. While normal aging thins your skin, UV radiation makes the outer layer thicker, especially in the stratum corneum ^[2]. This happens because UV light disrupts how your skin cells break down connections, which results in a thicker but weaker skin barrier ^[2].

UV radiation damages your skin in several ways. It reduces type VII collagen production in keratinocytes, which weakens the important fibers connecting your dermis and epidermis ^[2]. The sun's rays also trigger proteins called MMPs that break down type I collagen, your skin's main structural protein ^[2]. Photoaged skin shows a unique sign - solar elastosis, where unusual elastic tissue builds up deep in the dermis ^[2].

Oxidative stress plays a key role in both natural and environmental aging. UVA rays create reactive oxygen species (ROS) that damage important molecules like lipids, proteins, and DNA ^[3]. These free radicals set off a chain reaction that leads to more collagen breakdown ^[4]. They also block TGF-β, a compound that helps make new collagen ^[3].

Research shows a clear link between oxidative stress and wrinkles ^[3]. ROS break down the components that keep your skin elastic ^[3]. The skin around your eyes gets hit particularly hard because it's thin and moves a lot with facial expressions ^[3].

Sun damage starts much earlier than you might expect. About 80% of lifetime UV exposure happens before age 20, mainly because kids spend more time outside ^[5]. Too much sun exposure before the teenage years makes young adults three times more likely to develop melanoma ^[5]. That's why skin-healthy vitamins and antioxidant supplements become valuable tools for protection from an early age.

Top 3 Vitamins for Skin Health Backed by Research

Research has identified several vitamins that are vital for skin health and help curb aging effects. Three vitamins stand out because their benefits and clinical effectiveness support skin structure, function, and appearance.

Vitamin C: Collagen synthesis and brightening

Healthy skin naturally contains high concentrations of Vitamin C (ascorbic acid) in both epidermis and dermis layers. This vitamin improves collagen production as an essential cofactor. It stimulates hydroxylation of prolyl and lysyl residues during collagen formation ^[6]. The biochemical process makes the collagen molecule's tertiary structure stable. This explains why skin integrity suffers so much from vitamin C deficiency ^[7].

Research shows vitamin C does more than just produce collagen. Patients who applied topical vitamin C daily for three months saw improvements in fine and coarse wrinkles on their face and neck. Their skin texture also got better ^[8]. Vitamin C reduces UV-related DNA damage at the cellular level. It also limits lipid peroxidation and lowers pro-inflammatory cytokine release ^[1].

Vitamin C shows promising results for people with hyperpigmentation concerns. It stops melanin production by directly inhibiting tyrosinase - the enzyme that forms melanin ^[8]. The vitamin also binds to melanin inside cells. This creates a shortage of reactive oxygen species, copper, and calcium, which all help produce melanin ^[8].

Your body needs enough vitamin C to heal wounds properly. Studies show it speeds up healing by:

• Improving keratinocyte differentiation

• Stimulating epidermal barrier formation

• Rebuilding the protective stratum corneum ^[1]

Vitamin E: Antioxidant and anti-inflammatory

Human skin contains vitamin E as its most abundant fat-soluble antioxidant. The epidermis has higher concentrations than the dermis ^[9]. This vitamin comes in eight forms, but α-tocopherol shows the strongest biological activity ^[10]. Sebaceous glands store vitamin E and deliver it through sebum to the skin surface. That's why oily skin areas naturally have more vitamin E ^[11].

Vitamin E protects skin in two ways, unlike many other topical ingredients. It neutralizes harmful reactive oxygen species that damage cell membranes. The vitamin also absorbs ultraviolet light energy, which protects skin from sun damage ^[9]. Vitamin E works even better with vitamin C. Together, these antioxidants double the protection from sun exposure, making skin four to eight times more resistant ^[5].

Studies prove vitamin E reduces inflammation. Putting it on skin reduces swelling, thickness, redness, and edema caused by UV exposure ^[9]. These benefits happen because vitamin E decreases inflammatory prostaglandin production, stops interleukin production, and reduces cyclooxygenase-2 after UV exposure ^[9].

Vitamin D: Immune modulation and skin repair

Vitamin D does more than regulate calcium. Its active form, calcitriol (1,25-dihydroxyvitamin D), regulates many skin functions. Skin makes vitamin D when exposed to sunlight. The compound then changes in the liver and kidneys ^[4].

This vitamin manages how the epidermis develops. It controls growth in the skin's basal layer while helping keratinocytes form upper epidermis layers ^[12]. Poor skin barrier function and slow wound healing often result from vitamin D deficiency ^[13].

A newer study shows remarkable effects of vitamin D on wound healing. Patients treated with vitamin D had much better healing outcomes. Their lesions shrank more, and their skin barrier worked better ^[13]. The vitamin helps wounds close faster by producing new granulation tissue and improving epithelial development ^[14].

Vitamin D boosts skin's natural immunity at the cellular level. It increases toll-like receptor (TLR2) and its co-receptor CD14 production ^[15]. This starts a cycle where TLR2 and CD14 make more 1,25(OH)2D. This leads to cathelicidin production - an antimicrobial peptide that protects skin from infections ^[16].

Marine and Plant-Based Collagen: What Works Best?

Collagen supplements serve as the life-blood of modern skin health formulations. Marine and plant-based options have emerged as leaders in effectiveness. Research shows that picking the right collagen type can substantially change how well your body absorbs it and what results you see on your skin.

Hydrolyzed marine collagen peptides

Marine collagen consists mainly of Type I collagen and works exceptionally well with human skin structure. This type makes up the main component of calcium-depleted tissue in teeth, bone, skin, tendons, and the vasculature of lungs and heart ^[17]. The hydrolysis process makes marine collagen work better by breaking down large collagen molecules into smaller peptides. These peptides weigh less than 5,000 daltons—just the right size for absorption ^[18].

Clinical studies reveal impressive outcomes with hydrolyzed marine collagen. Participants saw their wrinkles reduce by 35% compared to where they started in a 12-week trial ^[3]. A randomized controlled study showed even more promising results. Women aged 45-54 saw their cheek skin elasticity improve by 20% after just six weeks. This improvement leveled off at 10% after 12 weeks ^[3].

Marine collagen does more than just reduce wrinkles. People taking hydrolyzed marine collagen supplements reported these improvements:

• 23% increase in skin elasticity

• 14% boost in hydration

• 22% boost in radiance

• 25% improvement in firmness ^[3]

Newer formulations make marine collagen work better by adding other helpful ingredients. To cite an instance, adding hyaluronic acid (100mg) and vitamin C (100mg) helps support normal collagen formation and protects cells better ^[19].

CollaGEM‑V and its biomimetic amino acid profile

CollaGEM‑V offers an innovative solution for people who want plant-based alternatives. This vegan formula uses plant-derived peptide complex that matches human collagen's amino acid profile. CollaGEM‑V contains 9 essential amino acids (EAAs) that our bodies need. Glycine and proline make up 28% of the formula - these are key components ^[20].

CollaGEM‑V stands out from regular vegan collagen boosters because of its advanced hydrolysis technology. Eurofins lab tests confirm that 40% of CollaGEM‑V weighs less than 1,000 Daltons. This small size helps your body absorb and use it quickly ^[20]. These tiny peptides can reach skin tissues more effectively.

Biomimetic vegan collagen solves several problems that come with animal-derived products. It avoids allergic reactions that often happen with marine collagen. There's no environmental impact from animal farming. You won't get exposed to heavy metals found in animal bones. Plus, it matches human collagen's unique amino acid profile more precisely ^[21].

Comparative studies: marine vs vegan collagen

Research comparing plant-based and marine collagen shows fascinating results. Scientists split 90 people into three groups in one groundbreaking study. They got either placebo, vegan collagen, or fish collagen once daily for eight weeks ^[2]. Vegan collagen boosted collagen density by 4.7% and elasticity by 5.1% compared to the placebo group ^[2].

The vegan collagen group saw even better visible results. Their wrinkles decreased by 27.5%, texture improved by 20.1%, and pores shrank by 12.3% ^[2]. Their skin got 4.3% more hydrated and 2.3% lighter ^[2].

Tariq Karim's comparative study looked at how both types affected hair and skin. Vegan collagen increased hair density by 24% while marine collagen achieved 18% ^[22]. Marine collagen worked better for skin elasticity though, showing a 52% improvement versus 19% for vegan collagen ^[22].

Each type showed different strengths. The vegan group's skin barrier worked better, with transepidermal water loss (TEWL) dropping by 20%. Marine collagen only decreased it by 1% ^[22]. But marine collagen controlled oil production better, reducing it by 12% compared to vegan's 2% ^[22].

[Goldman Laboratories' Skin Glow](https://goldmanlaboratories.com/products/skin-glow-best-collagen-supplements-for-skin?selling_plan=3374022835&variant=44015467757747) makes use of premium marine collagen peptides and other skin-supporting ingredients. Their research-backed formula helps you achieve optimal skin health.

Whatever type you pick, both marine and plant-based collagen options show scientifically verified benefits for skin health. They provide effective solutions that fit different priorities and dietary needs.

Botanical Extracts That Support Skin Regeneration

Botanical extracts are powerful allies in skin regeneration and provide natural solutions to curb aging. Their bioactive compounds target specific cellular pathways that repair and protect skin. Scientific research confirms their benefits when people add them to daily supplement routines.

Polypodium leucotomos for UV protection

Polypodium leucotomos, a tropical fern native to the Americas, stands out because of its remarkable protective abilities against UV rays. We used this botanical extract to decrease UV-mediated oxidative damage to DNA. It does this by boosting the body's natural antioxidant systems that stop reactive oxygen species from forming ^[23]. Clinical studies show that taking this fern extract as a supplement protects effectively against solar ultraviolet radiation damage.

The fern's protective properties come from its rich phenolic components. These include chlorogenic acid, coumaric acid, vanillic acid, and powerful oxidation blockers like caffeic and ferulic acids ^[23]. A study with healthy adults revealed that people who took P. leucotomos extract (480mg daily) had much less inflammatory reactions to sun exposure. More than 73% of participants reported fewer skin rashes after just 15 days ^[1].

Research confirms that taking up to 480mg of oral P. leucotomos daily is safe for most people ^[1]. A 60-day study where participants took supplements twice daily showed no negative effects, which makes it good for long-term use ^[23]. The most convincing proof of how well it works comes from research showing that taking supplements five days before UV exposure increased blood antioxidant activity by 30%. It also boosted cancer-fighting p53 protein levels by 63% ^[1].

Olive leaf extract and anti-aging effects

Olive leaf extract (OLE) delivers powerful anti-aging benefits through concentrated phenolic compounds. Oleuropein, OLE's most abundant phenolic, helps cells live longer and slows down signs of aging in human fibroblasts ^[6]. This helps maintain young-looking skin.

The extract works through several beneficial pathways. It improves proteasome function—the cell's protein quality control system. The extract also reduces protein oxidation levels ^[6]. These mechanisms help keep skin cells healthy as aging continues.

OLE shows significant anti-inflammatory properties that are vital for skin regeneration. Studies reveal that OLE treatment lowers levels of inflammatory markers like IL-6 ^[24]. More research shows OLE can reduce gene expression of pro-inflammatory cytokines (IL-1β, TNF-α, ICAM-1, VCAM). IL-8 was different - only the whole extract could modify it, not isolated compounds ^[25].

Curcumin's anti-inflammatory skin benefits

Curcumin from turmeric (Curcuma longa) offers remarkable skin regeneration benefits through concentration-dependent mechanisms. At very low doses (≤1 μM), it acts as a strong antioxidant. At moderate doses (5–10 μM), it works as an autophagy inducer ^[26]. This dual action makes it valuable for skin health supplements.

This compound prevents skin photoaging by targeting the Keap1-Nrf2 pathway. Curcumin changes Keap1's thiol groups and destabilizes the Keap1-Nrf2 complex. This promotes Nrf2 nuclear translocation and increases antioxidant enzymes including SOD1, HO-1, and GPx ^[26]. It also reduces inflammation by blocking NF-κB signaling, stopping TLR activation, and preventing IKK and IκB phosphorylation ^[26].

Curcumin has amazing benefits but faces bioavailability challenges due to low water solubility, poor absorption, and quick metabolism ^[27]. Scientists have developed several solutions to these problems. They can form complexes with albumins or certain metal ions (like Se²⁺, Zn²⁺), add piperine, use nanoparticles or liposomes, or include phospholipids ^[27]. These state-of-the-art approaches make curcumin a more viable ingredient in effective skin supplements.

Algae-Based Superfoods for Skin Glow

Microalgae are nature's most concentrated source of bioactive compounds that benefit skin health. These tiny aquatic organisms pack more nutrients than regular supplements and provide amazing benefits through their unique biochemical makeup.

Spirulina and chlorella for collagen support

Spirulina and chlorella work as powerful allies for skin structure because of their exceptional amino acid profiles. These algae contain three times more protein than steak and provide all essential and non-essential amino acids your skin needs ^[8]. They excel at providing glycine and proline—amino acids that help your skin stay firm and support collagen production ^[28].

These algae do more than just provide amino acids. They contain compounds that protect existing collagen. Research shows algae extracts block matrix metalloproteinases (MMPs)—enzymes that damage collagen and elastin fibers during oxidative stress ^[8]. This protection helps your skin maintain its structure against daily environmental damage.

Research proves these benefits work both on the skin and from within. Studies show that spirulina protein blocks multiple aging processes and improves skin appearance substantially ^[8]. On top of that, it provides vitamins A, C, E, and minerals like zinc, copper, and selenium—everything your skin needs to stay healthy ^[8].

Astaxanthin's role in reducing wrinkles

Astaxanthin from microalgae stands out as nature's strongest antioxidant. It works 6,000 times better than vitamin C and 100 times better than vitamin E ^[29]. This powerful compound protects skin cells from damage caused by UV radiation, pollution, and internal stress factors ^[30].

A randomized, double-blind, placebo-controlled study revealed astaxanthin's impact on wrinkles. The placebo group's wrinkles got deeper after 16 weeks, while people taking astaxanthin managed to keep their skin condition unchanged ^[9]. Skin moisture levels dropped from 264.7 to 204.9 µS in the placebo group but stayed stable for those taking astaxanthin ^[9].

Clinical evidence on antioxidant activity

Algae-based supplements reduce inflammation and improve skin quality measurably. Astaxanthin stops inflammatory cytokine production in epidermal keratinocytes and reduces MMP-1 from dermal fibroblasts after UV exposure ^[9]. This explains why taking astaxanthin over time prevents age-related skin problems.

The numbers speak for themselves: skin radiance improves by 15% instantly and 26% within a month, while firmness increases by 14% ^[29]. People looking for the best skin health supplements will find these algae-based ingredients are a great way to get benefits that target the root causes of skin aging.

How to Choose the Best Skin Supplement Safely

The skin supplement market is big and complex. Smart consumers need to pay attention to quality and safety standards. Since the FDA doesn't regulate these supplements, you must take extra steps to find products that work without risking your health.

Check for third-party testing and certifications

Quality seals from independent laboratories should be your first checkpoint. Research shows that all but one of these skin supplements lack quality seals from recognized organizations ^[5]. These seals verify that products have the right ingredients without harmful contaminants. The most reputable certification organizations include:

• United States Pharmacopeia (USP)

• National Sanitation Foundation (NSF)

• ConsumerLab

• Underwriters Laboratory

NSF certification stands out because it requires yearly audits and regular retesting to maintain compliance ^[31]. Tablets and capsules usually provide more consistent doses than gummies, which can vary in their ingredient amounts ^[5].

Avoid misleading marketing claims

You should watch out for products that claim to be "miracle cures," "breakthroughs," or treatments for many unrelated conditions ^[32]. The law states that supplements cannot claim to "cure," "treat," or "prevent" disease ^[33].

The best approach is to try one supplement at a time and watch how your body reacts ^[32]. Products with "proprietary blends" need extra scrutiny—brands often use this term to hide exact ingredient amounts while using minimal effective doses ^[34].

Look for synergistic ingredient combinations

The right combination of ingredients can boost each other's effectiveness. To name just one example, see how vitamin C works with vitamin E and ferulic acid to double photoprotection ^[35]. Your skin's moisture barrier benefits more when ceramides team up with fatty acids and cholesterol, compared to using any single ingredient ^[36].

[Goldman Laboratories' Skin Glow](https://goldmanlaboratories.com/products/skin-glow-best-collagen-supplements-for-skin?selling_plan=3374022835&variant=44015467757747) offers research-backed ingredients that work together, verified through independent testing.

Conclusion

Research shows that picking the right skin supplements needs a careful look at ingredients, their combined effects, and quality standards. The evidence points to several components that make real improvements in skin health, elasticity, and overall appearance.

Your body's natural collagen production starts declining at age 25, making collagen supplements the life-blood of skin health. Both hydrolyzed marine collagen and plant-based alternatives like CollaGEM‑V show remarkable clinical benefits, though each has different strengths. CollaGEM‑V's biomimetic amino acid profile matches human collagen's structure through its tripeptide sequence. This gives your body the exact building blocks it needs for natural collagen synthesis.

Vitamins C, E, and D serve as powerful allies in this process. Your skin gets brighter while Vitamin C boosts collagen production. Vitamin E shields against oxidative damage, particularly when combined with Vitamin C. Your skin cell differentiation and wound repair improve with Vitamin D.

Botanical extracts bring another layer to skin health. UV protection comes from Polypodium leucotomos, while olive leaf extract fights aging through reduced protein oxidation. Curcumin tackles inflammation at multiple cellular levels.

Spirulina, chlorella, and astaxanthin - these algae-based ingredients pack exceptional nutrients that support collagen production and protect your skin from environmental damage.

Smart supplement shopping means looking for third-party testing certifications, scientifically proven ingredient combinations, and realistic claims. These quality markers help you find effective, safe formulations amid misleading marketing.

Decades of research make one thing clear: skin supplements work best when they target multiple aspects of skin aging at once. This comprehensive approach combines collagen support, antioxidant protection, and cellular regeneration. The result? Radiant, youthful skin that shows your true inner health.

FAQs

Q1. What are the most effective vitamins for skin health? Vitamins C, E, and D are particularly beneficial for skin health. Vitamin C stimulates collagen production and brightens skin tone, Vitamin E protects against oxidative damage, and Vitamin D regulates skin cell differentiation and enhances wound repair.

Q2. How does collagen supplementation benefit the skin? Collagen supplements can help combat the natural decline in collagen production that begins around age 25. Both marine and plant-based collagen options have shown significant clinical benefits, including improved skin elasticity, hydration, and reduction in wrinkles.

Q3. Are there any plant-based ingredients that support skin health? Yes, several plant-based ingredients are beneficial for skin health. Polypodium leucotomos provides UV protection, olive leaf extract offers anti-aging benefits, and curcumin from turmeric has potent anti-inflammatory properties for the skin.

Q4. What role do algae-based superfoods play in skin health? Algae-based superfoods like spirulina, chlorella, and astaxanthin are rich in nutrients that support skin health. They provide essential amino acids for collagen production, protect against oxidative stress, and have been shown to improve skin moisture and reduce wrinkles.

Q5. How can I choose a safe and effective skin supplement? When selecting a skin supplement, look for products with third-party testing certifications, scientifically validated ingredient combinations, and realistic claims. Avoid supplements with misleading marketing claims or those promising to cure or treat diseases. It's also beneficial to choose products with synergistic ingredient combinations for optimal effectiveness.

References

[1] - https://www.healthline.com/nutrition/polypodium-leucotomos
[2] - https://www.sciencedirect.com/science/article/pii/S1756464623005558
[3] - https://pmc.ncbi.nlm.nih.gov/articles/PMC8176521/
[4] - https://www.explorationpub.com/Journals/em/Article/1001225
[5] - https://pmc.ncbi.nlm.nih.gov/articles/PMC7455464/
[6] - https://www.sciencedirect.com/science/article/abs/pii/B9780123744203001492
[7] - https://pmc.ncbi.nlm.nih.gov/articles/PMC5579659/
[8] - https://energybits.com/blogs/blog/anti-aging-benefits-of-chlorella-and-spirulina-for-skin-and-hair?srsltid=AfmBOopch5IWkEqMh24Kldumh6kXQVRL8cZK_Xq2NDj6f0rcoGuD6RtA
[9] - https://pmc.ncbi.nlm.nih.gov/articles/PMC5525019/
[10] - https://pmc.ncbi.nlm.nih.gov/articles/PMC10820017/
[11] - https://health.clevelandclinic.org/vitamin-e-for-skin-health
[12] - https://pmc.ncbi.nlm.nih.gov/articles/PMC3687803/
[13] - https://onlinelibrary.wiley.com/doi/10.1111/iwj.14541
[14] - https://www.sciencedirect.com/science/article/abs/pii/S1748681525002657
[15] - https://www.mdpi.com/1422-0067/26/11/5005
[16] - https://pmc.ncbi.nlm.nih.gov/articles/PMC9092099/
[17] - https://pmc.ncbi.nlm.nih.gov/articles/PMC11050892/
[18] - https://ancientandbrave.earth/blogs/news/bovine-marine-or-vegan-what-s-the-difference?srsltid=AfmBOopSnJA8cWwmFO52jACfNpyuLrTfHyqZSjwIC_q_Kdp3xlL4B9-u
[19] - https://www.nutravita.co.uk/products/hydrolysed-marine-collagen-with-hyaluronic-acid-1400mg?srsltid=AfmBOooQokHoDvVQYVihobQ9EwG7S2o_HSdV7JqR2dwT3R0aHXQic64I
[20] - https://www.ingredientsnetwork.com/collagem-v-biomimetic-vegan-collagen-alternative-prod1291658.html
[21] - https://www.vecollal.eu/
[22] - https://santilondon.com/groundbreaking-research-reveals-the-impact-of-vegan-and-marine-collagen/
[23] - https://pmc.ncbi.nlm.nih.gov/articles/PMC4345929/
[24] - https://www.nature.com/articles/s41598-021-87628-7
[25] - https://pmc.ncbi.nlm.nih.gov/articles/PMC10451521/
[26] - https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2025.1559032/full
[27] - https://pmc.ncbi.nlm.nih.gov/articles/PMC11012053/
[28] - https://www.healthline.com/health/beauty-skin-care/spirulina-benefits-skin
[29] - https://www.mesoestetic.co.uk/blog/astaxanthin/?srsltid=AfmBOorPQfynF7VpNzOHDZINEh1dEjRlW0YmpzU1P1Ug8ZZPRknZLieo
[30] - https://www.algatech.com/benefits-of-astaxanthin-on-healthy-aging/
[31] - https://www.nsf.org/consumer-resources/articles/supplement-vitamin-certification
[32] - https://www.cancer.org/cancer/managing-cancer/treatment-types/complementary-and-integrative-medicine/dietary-supplements/choosing-safely.html
[33] - https://www.asa.org.uk/news/supplementary-advice-on-health-claims-in-ads-for-supplements.html
[34] - https://www.independent.co.uk/health-and-fitness/how-to-choose-supplements-b2722134.html
[35] - https://www.healthline.com/health/beauty-skin-care/ingredients-that-work-well-together
[36] - https://blog.glowrecipe.com/5-synergistic-ingredient-pairings-to-level-up-your-skincare-routine/