Written by the Plenthera team (orthomolecularly trained). Scientifically reviewed in May 2026. Last updated: May 28, 2026.

Some consumers search by active ingredient rather than brand: 'I want something with retinol,' or 'what do you have with hyaluronic acid?'. This page compiles our beauty products—supplements and topicals—arranged by active ingredient. Useful for targeted comparison without having to scroll through all brands first.

On this pageKey ingredients and their function · Our ingredient categories · Frequently asked questions · Combine with · Sources

Key ingredients and their function

Collagen (oral)

Hydrolyzed collagen 2.5-10 g per day — studied for skin hydration and elasticity (Choi 2019; Pu 2023).

Hyaluronic acid (oral & topical)

Binds water in skin and joints. Oral 120-240 mg/day shows modest skin hydration effect (Oe 2017). Topical directly hydrating.

Vitamin C (oral & topical)

Contributes to collagen formation for normal skin (EFSA). Topical ascorbic acid or derivatives as antioxidant and skin tone equalizer.

Biotin

For normal hair, skin, and nails (EFSA). Effect primarily with true deficiency.

Zinc

Contributes to normal hair, nails, and skin (EFSA). Often also beneficial for acne-prone skin.

Tallow (topical)

Fatty acid profile similar to human sebum. For dry and sensitive skin.

Our ingredient categories

• Collagen — marine, bovine, vegan boosters
• Hyaluronic acid — skin + joints
• Vitamin C — wholefood and synthetic
• Biotin — hair, skin, nails
• Zinc — skin and immune support
• Tallow — natural skin oil
• Beautiful Skin from Within — all skin-focused supplements

Frequently Asked Questions

How do I find a product with retinol?

Filter by brands known for retinol formulas; in our skincare category, it is clearly stated when a product contains retinol. For oral vit A: see multivitamins and whole foods.

What is the difference between oral and topical?

Oral works systemically via digestion. Topical works locally on the skin. Both have their place — for some claims (vit C for collagen formation) oral works better, for others (skin tone equalization) topical.

Can I combine oral and topical beauty supplements?

Absolutely. Many dermatologists recommend a combination — nourishment from within (collagen, vit C, omega 3) and targeted topical care.

Combine with other categories

Searching by ingredient combines with:

• Beauty & More — the main category
• Beautiful Skin from Within — all skin supplements
• Personal Care Products — topical alternatives
• Vitamins & Supplements — vitamin A, C, zinc, biotin

Sources & references

• EFSA — Regulation (EU) 432/2012 (biotin, zinc, vitamin C, A claims)
• Choi et al. (2019); Pu et al. (2023) — collagen supplementation meta-analyses
• Oe et al. (2017) — hyaluronic acid and skin hydration

Disclaimer: This text is for informational purposes only and does not replace medical advice. Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. If in doubt, always consult your doctor or an orthomolecular therapist.