Sodium Benzotriazolyl Butylphenol Sulfonate
A water-soluble UV stabilizer for the formula. It protects actives and pigments from fading in light. Well tolerated.
Evidence by route
Topical application
A functional UV stabilizer. 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
Sodium benzotriazolyl butylphenol sulfonate (INCI: Sodium Benzotriazolyl Butylphenol Sulfonate) is a water-soluble UV stabilizer. Its job in a formula is to absorb ultraviolet light to protect light-sensitive actives, colorants and fragrances from photodamage, so the product does not lose color or efficacy in the light. It is a functional component, not a sunscreen filter for skin and not a care active. Worth making clear: it does not protect your skin from the sun. Its work is to protect the formula itself inside the package. Anyone seeking sun protection needs a sunscreen with approved UV filters. Topically, at the low levels it is used in, it has no systemic relevance, so it can be used during pregnancy and breastfeeding. Tolerance is good and the allergy potential is low. At the usual doses it rarely causes reactions, even on sensitive skin.
Frequently asked questions
Is Sodium Benzotriazolyl Butylphenol Sulfonate safe during pregnancy?
Sodium Benzotriazolyl Butylphenol Sulfonate is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
What skin types is Sodium Benzotriazolyl Butylphenol Sulfonate for?
Sodium Benzotriazolyl Butylphenol Sulfonate suits: normal, dry, combination, oily, sensitive.
What is Sodium Benzotriazolyl Butylphenol Sulfonate and what does it do in cosmetics?
A water-soluble UV stabilizer for the formula.
What's the INCI name for Sodium Benzotriazolyl Butylphenol Sulfonate?
The INCI name is Sodium Benzotriazolyl Butylphenol Sulfonate.
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