Hydrolyzed Rhodophyceae Extract
A red algae hydrolysate. It draws water and helps soothe skin. Well tolerated.
Evidence by route
Topical application
A functional marine extract. Safe.
- CIR Cosmetic Ingredient Review safety assessment
How to read tiers A–F
- BLimited evidence. One RCT or several controlled studies with limitations
Tolerability and safety
- Irritation potential
- Low
- Allergen risk
- Low
- Pregnancy
- Safe
- Suitable for
- Normal, Dry, Combination, Oily, Sensitive
About this ingredient
Hydrolyzed red algae extract (INCI Hydrolyzed Rhodophyceae Extract) comes from seaweed of the Rhodophyta division processed by hydrolysis. In a formula it draws water into the skin and adds a soothing element, useful in moisturizers and products for reactive skin. This is a surface-hydration and soothing-support component, not a treatment active. Algal polysaccharides hold water and give a feeling of comfort but do not repair the barrier or correct in depth. As support it does the job; do not expect a strong corrective effect. Applied topically it is not systemically relevant, so it can be used during pregnancy and breastfeeding without issue. Tolerability is good. Irritation and allergy potential are both low, suitable for sensitive and reactive skin. There is no data on relevant comedogenicity.
Frequently asked questions
Is Hydrolyzed Rhodophyceae Extract safe during pregnancy?
Hydrolyzed Rhodophyceae Extract is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Hydrolyzed Rhodophyceae Extract for?
Hydrolyzed Rhodophyceae Extract suits: normal, dry, combination, oily, sensitive.
What is Hydrolyzed Rhodophyceae Extract and what does it do in cosmetics?
A red algae hydrolysate.
What's the INCI name for Hydrolyzed Rhodophyceae Extract?
The INCI name is Hydrolyzed Rhodophyceae Extract.
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