Activated Resorcinol in Toner Formulation

Regarding your question about using Activated Resorcinol in a water-based toner formula like SK-II, and the viability of your proposed formula:

Activated Resorcinol is an ingredient that is soluble in oil, not water. This means it cannot be simply dissolved in a water-based formula like a typical toner. While it might be possible to use a solubilizer like Tween 20 to help disperse it in a water phase, achieving a stable, clear solution with 1% Activated Resorcinol in a predominantly water formula using only 2% Tween 20 can be challenging and may result in cloudiness or instability over time.

Your proposed formula contains several water-soluble ingredients (N-Acetyl Glucosamine, B3, B5, Zinc PCA, DMAE, Licorice extract, Phenoxyethanol) which are compatible with a water base. Activated Resorcinol is also compatible with Vitamin B3 and N-Acetyl Glucosamine.

However, the main challenge for a clear toner format is the solubility of Activated Resorcinol itself.

Light Sensitivity and Packaging:

Activated Resorcinol is light sensitive. The finished product should be protected from light, and packaging in opaque bottles is recommended. Continuous exposure to light can cause the formula to change color. Therefore, packaging this formula in a clear bottle is not advisable.

In summary, while the other ingredients in your formula are suitable for a toner, incorporating 1% Activated Resorcinol stably and clearly in a water base is difficult due to its oil solubility. Furthermore, the formula requires opaque packaging due to the light sensitivity of Activated Resorcinol.