Product Availability and Penetration Enhancers

Here is information regarding the availability of the products you inquired about and the use of penetration enhancers in cosmetic formulations.

Product Availability

Regarding Activated Resorcinol S, French Pine Bark Extract, Apple Phloretin™, and BaicaVital™, the manufacturer is discontinuing production. The company will continue to sell existing stock until approximately June 2020. These products are no longer displayed on the website to prevent new formulations from incorporating them. However, if you have previously used these ingredients, you can still order them by contacting customer service at care@myskinrecipes.com.

If you are developing a new formulation or have not used these ingredients before, the following alternatives are recommended:

• For Activated Resorcinol S, use Activated Resorcinol (regular).
• For Apple Phloretin™, use Pure-Phloretin™.
• For BaicaVital™, use Pure-Baicalin™.

Penetration Enhancers

Most ingredients in cosmetic formulations can penetrate the skin naturally without the need for penetration enhancers. Therefore, it is generally not necessary to include a penetration enhancer in every formula. The reason you may not see them listed on commercial product labels is that they are not always required for effective penetration.

Penetration enhancers are primarily used when you specifically want to increase the absorption of certain active ingredients into the skin. However, increasing absorption is not always desirable. For ingredients that can cause irritation, such as AHAs and BHAs (like Salicylic Acid), slower absorption is often preferred to minimize potential irritation. In such cases, ingredients like Reservoir-Tech are used to help retain the active substance under the skin and release it gradually over a longer period, providing a sustained effect while reducing irritation.

Examples of penetration enhancers available include Tetrahydropiperine, which helps transport various ingredients into the skin.

In summary, while most ingredients penetrate adequately on their own, penetration enhancers can be beneficial for specific purposes, such as boosting the efficacy of certain actives or, conversely, controlling the release of potentially irritating ingredients for better tolerance.