Written by the Plenthera team (trained in orthomolecular nutrition). Scientifically reviewed in September 2026. Last updated: 22 September 2026.

Some customers search not by brand but by active ingredient: 'what do you have with collagen?' or 'I'm looking for something with hyaluronic acid'. This page groups our beauty products — supplements and external care — by ingredient. Handy for comparing in a targeted way without first scrolling through all the brands.

On this page: Key ingredients · Our ingredient categories · Frequently asked questions · Combine with · Sources

Key ingredients

Collagen (oral)

Hydrolysed collagen, usually 2.5–10 g per day in studies, is being researched in relation to skin hydration and elasticity (de Miranda et al. 2021). At Plenthera as fish collagen, bovine collagen, bone broth collagen and in combination formulas.

Hyaluronic acid

A substance naturally present in the body that binds water in skin and connective tissue. Oral hyaluronic acid (120–240 mg per day) is being researched in relation to skin hydration (Oe et al. 2017).

Vitamin C

"Vitamin C contributes to normal collagen formation for the normal function of skin." At Plenthera, among others, as a wholefood powder from acerola and lemon (Plantforce Vitamine C-Complex).

Biotin

"Biotin contributes to the maintenance of normal hair" and "… of normal skin". A deficiency is rare with a varied diet.

Zinc

"Zinc contributes to the maintenance of normal hair", "… of normal nails" and "… of normal skin".

Tallow (external)

Purified beef fat with a fatty acid profile similar to the skin's own sebum. Popular for dry and sensitive skin.

Our ingredient categories

• Collagen — fish, bovine and vegan collagen formulas
• Hyaluronic acid — skin and connective tissue
• Vitamin C — wholefood and single vitamin C
• Biotin — hair and skin
• Zinc — hair, nails, skin and immune system
• MSM — organic sulphur compound
• Vitamin E — also in the Plent Tallow Balsem with vitamin E
• Vitamin D
• Omega 3-6-9 — fatty acids from fish, algae and plant oils
• Q10 and Resveratrol
• Tallow — Plent Tallow Balsem, external
• Beautiful Skin from Within — all skin supplements at a glance

Frequently asked questions

Do you have products with retinol?

We do not currently stock cosmetics with retinol. You can find vitamin A from food sources in our category vitamin A and in organ meat supplements.

What is the difference between oral and external?

Oral products work via digestion throughout the body; external products work locally on the skin. The official health claims, such as those for vitamin C and collagen formation, apply to intake.

Can I combine supplements and external care?

Certainly. Many people combine nutrition from within (collagen, vitamin C, omega 3) with targeted care from the outside.

Combine with other categories

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

Sources & references

• Regulation (EU) 432/2012 — claims for biotin, zinc and vitamin C.
• de Miranda RB. et al., "Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis", Int J Dermatol (2021).
• Oe M. et al., "Oral hyaluronan relieves wrinkles: a double-blinded, placebo-controlled study over a 12-week period", Clin Cosmet Investig Dermatol (2017).

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.