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BUTYLPHTHALIDE.

Valuable CAS 6066-49-5 / PERFUMING

A bioactive phthalide compound naturally derived from celery seed extract that demonstrates multi-target skin benefits through barrier reinforcement and sebum regulation. This versatile ingredient simultaneously addresses oily skin concerns while strengthening the skin's protective matrix through targeted enzyme modulation.

sebum regulation skin conditioning barrier reinforcement antioxidant

Science

Reinforces skin barrier integrity by upregulating SPINK5 protease inhibitor while downregulating KLK6/KLK13 desquamation enzymes, preventing premature cell shedding. Dose-dependently reduces sebaceous lipid synthesis for oil control and enhances microcirculation while providing antioxidant protection via Nrf2 pathway activation.


Research

Medium confidence
Effective range 0.05–2%
Optimal

0.05%

Key findings

  1. 01 Significant sebum reduction and 36.6% decrease in scalp flaking after 4 weeks
  2. 02 No irritation or sensitization in human patch testing

Transparency

Not commonly dusted

Specialized ingredient with clear efficacy data at low concentrations, minimal dusting concerns


The Formula

Solubility
Oil
Optimal pH 4.5 – 6.5
0 7 14

Stability

Heat-sensitive compound requiring addition during cooling phase below 40°C; maintains stability for 4 years under proper storage conditions

Synergies

  • niacinamide
  • zinc compounds

Conflicts

  • strong oxidizing agents
  • alkaline pH environments above 8.0
  • prolonged UV exposure

Safety

CIR Status
Not reviewed
Max tested
2%
Sensitization risk Low

FDA-recognized flavoring agent with established safety profile; neat form classified as potential irritant but cosmetic dilutions well-tolerated


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Valuable

Well-researched multi-functional ingredient offering proven sebum control and barrier benefits at low, cost-effective concentrations.


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