Bakuchiol
Description
Bakuchiol (CAS 10309-37-2), also marketed as Sytenol A, is a meroterpene phenol derived from Psoralea corylifolia seed extract. It functions as a plant-based active ingredient in cosmetic and personal care formulations.
This compound is recognized for its retinol-like activity without the photosensitivity concerns associated with vitamin A derivatives. In skincare formulations, it is used as a retinol alternative in anti-aging serums and creams.
It is particularly effective in facial oils targeting fine lines and uneven skin tone within clean beauty and sensitive-skin product lines. It is also incorporated into suncare formulations for its antioxidant activity.
This ingredient helps to stabilize UV-exposed skin and protect against oxidative stress from environmental exposure. Formulators use it in combination with conventional actives such as niacinamide or peptides.
Its compatibility with a broad pH range supports multi-active product development. In pharmaceutical topicals, it is evaluated as a functional ingredient in preparations targeting skin renewal and barrier support.
The material is supplied as a pale yellow to amber viscous liquid. Standard commercial grades include cosmetic-grade and high-purity specifications, with leading market grades typically standardized to high purity.
Leading market grades are often standardized to ≥99% purity by HPLC. Bulk supply is available in kilogram and drum quantities to support both development-scale and commercial manufacturing needs.
Physical Properties
| Boiling Point | 145-147 °C @ Press: 0.7 Torr |
| Density | 0.963 |
| Flash Point | 177°C |
| Color | Oil |
| Form | neat |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | 1.4500 (estimate) |
| Log P | 5.09 at 20℃ and pH6.31 |
Safety & Handling (Learn More)
Trade & Regulatory
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 3 |
Documentation
Other Names
(S)-Bakuchiol|Sytenol a|4-[(1E,3S)-3-ethenyl-3,7-dimethylocta-1,6-dienyl]phenol|OT12HJU3AR|4-(3-Ethenyl-3,7-dimethyl-1,6-octadienyl)phenol|UP-256|Phenol, 4-[(1E,3S)-3-ethenyl-3,7-dimethyl-1,6-octadien-1-yl]-|Phenol, 4-(3-ethenyl-3,7-dimethyl-1,6-octadienyl)-, [S-(E)]-
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