Questions about BHA pH, Revised Toner Formula, and 'Tester' Serum Formula for Oily, Acne-Prone Skin

Hello,

Thank you for your questions regarding BHA, the revised BHA Toner Plus Vitamin formula, and your proposed "Tester" formulation.

1. Regarding BHA and acidity: According to the staff's response, if you intend to use BHA to dissolve clogged pores, high acidity is not strictly necessary; a pH between 4-6 can be effective. However, if the goal is skin exfoliation, a lower pH will provide better exfoliating performance.

2. Regarding the revised BHA Toner Plus Vitamin formula: The staff confirmed that your revised formula is usable and the ingredients are compatible.

3. Regarding your "Tester" formulation for oily, dehydrated, acne-prone skin near 30:

   • The staff reviewed your proposed formula and indicated it is generally okay.
   • However, for oily and dehydrated skin, the staff recommended removing MOIST72 and WaterLock as they are less suitable for this skin type.
   • The staff suggested that ingredients focusing on balancing skin oil would be more appropriate. Examples of such ingredients include Zinc PCA, Licochalcone A, L-Carnitine, and AcneBee.
   • You asked if Zinc PCA is available in the listed tester options, and the staff confirmed that it is not.
   • Additionally, the staff advised checking all facial products you use to ensure they do not disrupt skin balance, particularly harsh facial cleansers. A suitable cleanser should leave the skin feeling slightly slippery or oily after washing, indicating that the skin's natural oils haven't been completely stripped, which can otherwise stimulate the skin to produce more oil and lead to a mix of oiliness and dryness.

Hope this clarifies your questions!