Sarcosine
An amino acid (glycine derivative). It conditions skin and helps regulate oiliness, common in products for problem skin. Well tolerated.
Evidence by route
Topical application
A functional amino acid. Safe, well tolerated.
- 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
Sarcosine is an amino acid, a natural derivative of glycine. In cosmetics it is used as a skin conditioner and added to products for oily or acne-prone skin, where it is linked with oil control. It also serves as a base for making mild sarcosinate-type surfactants. On efficacy, restraint is in order. It works as a supporting conditioning ingredient; data on real sebum control in human skin are limited, so a strong sebum-regulating effect should not be expected from it alone. Applied topically it has no systemic relevance, so it can be used during pregnancy and breastfeeding. Tolerance is good. Irritation and allergy potential are low, which makes it suitable for sensitive skin, including oily skin that is often dehydrated as well. In cosmetic formulas most people do not react to it.
Frequently asked questions
Is Sarcosine safe during pregnancy?
Sarcosine is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Sarcosine for?
Sarcosine suits: normal, dry, combination, oily, sensitive.
What is Sarcosine and what does it do in cosmetics?
An amino acid (glycine derivative).
What's the INCI name for Sarcosine?
The INCI name is Sarcosine. It may also appear as: N-Methylglycine.
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