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Ingredient library / T-Butyl Alcohol
Solvent / vehicle ingredient

T-Butyl Alcohol

A tertiary alcohol (2-methyl-2-propanol) used as a volatile solvent and solubilizer, particularly in sunscreen formulas to dissolve UV filters.

Also known as: Tert-Butyl Alcohol, 2-Methyl-2-Propanol, Tertiary Butanol

solventsolubilizerviscosity decreasing

Benefits

  • ✓Helps dissolve UV filters and other actives in sunscreen formulations
  • ✓Reduces viscosity to improve spreadability

Watch for

  • ⚠Volatile; may cause mild irritation at high concentrations
  • ⚠Drying to skin if used at high levels
At a glance
CategorySolvent / vehicle
IrritancyModerate–high
Beginner-friendlyYes
In your routine

Generally well-tolerated and easy to layer.

Found in 12 products
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Products with T-Butyl Alcohol

Birch Juice Moisturizing Sunscreen SPF50+ PA++++Sunscreen
Round Lab
Birch Juice Moisturizing Sunscreen SPF50+ PA++++
Relief Sun: Rice + Probiotics SPF50+ PA++++Sunscreen
Beauty of Joseon
Relief Sun: Rice + Probiotics SPF50+ PA++++
Madagascar Centella Hyalu-Cica Water-Fit Sun Serum SPF50+Sunscreen
SKIN1004
Madagascar Centella Hyalu-Cica Water-Fit Sun Serum SPF50+
Water Splash Sun Cream Fresh SPF50+Sunscreen
Espoir
Water Splash Sun Cream Fresh SPF50+
The 6 Peptide Skin Booster SerumSerum
COSRX
The 6 Peptide Skin Booster Serum
Deep Vitamin C Ampoule 2.0Ampoule
Medicube
Deep Vitamin C Ampoule 2.0