Advice on your formula with Bakuchiol and Vitamin E in Argan Oil

In your formula containing 1% Bakuchiol, 0.2% dl-alpha Tocopherol, and Argan Oil as the main base, both Bakuchiol and dl-alpha Tocopherol are oil-soluble active ingredients. Argan Oil, being an oil base, already acts as a carrier to help deliver these ingredients into the skin to some extent.

However, Dimethyl Isosorbide (DMI) is known as a penetration enhancer. It has the property of significantly improving the absorption of active ingredients into the skin.

Based on the product information for Bakuchiol, it is specifically recommended to use Bakuchiol together with Dimethyl Isosorbide at a rate of 2-3% to aid in delivery and achieve maximum efficiency. Furthermore, DMI is also noted to help improve the performance of Vitamin E.

Therefore, adding DMI to your formula will help increase the absorption of both Bakuchiol and dl-alpha Tocopherol into the skin significantly, allowing the active ingredients to exert their effects more fully.

In summary: While your formula can be used without DMI, adding DMI at an appropriate rate (as recommended, 2-3%) is advisable to help enhance the delivery of the active ingredients into the skin for the best possible results.