Cosmetics Formulation Development

Dear R&D Officer

I would like to ask questions on the following issues:

1. If you want a liquid sunscreen product, use it as a "sprayer sunscreen" (non-aerosol) with SPF 50 and PA+++.
According to the recipe guideline at myskin recommended web page.

1.Water Solvent 44.00 %

2. Cyclomethicone Emolients 15.00 %

3. Titanium Dioxide 15nm Liquid Sunscreen 25.00 %

4. Zinc Oxide 35nm Liquid Sunscreen 15.00 %

5. Mild Preserved Eco Preservative 1.00%


question
1. The above formula, when done, is in the form of use as a "liquid" and can be used as a "spray spray" (non-aerosol) to have SPF 50 and PA+++ or not? No, unless it is recommended as a substitute.
2. If you want to use PMMA Booster (SPF/Color Booster) to boost the SPF/PA, use a proportion of 3% appropriate or not, and if applied, can reduce Zinc oxide or Titanium Dioxide or not?
3. If ordering PMMA Booster , please advise that SPF verification service is available, how to proceed? Please advise.

Thank you for your answer.

hello

desired formula Is it necessary to shake before use? Or don't you have to shake it before use?

In case of shaking before use Can make SPF high, but if you don't have to shake before use. Must be made into a pure oil sunscreen formula, which may be sticky on the skin. Because if it is a water-soluble sunscreen formula, the SPF will be low.

If the formula has PMMA Booster, you can send measurements for free.