Cosmetics Formulation Development

Disturbing advice on making recipes Tretinoin ( Vitamin A ) 0.025% in oil can put Tretinoin 0.025 plus Mineral Oil ชนิดเบา ] Mineral Oil ชนิดเบา 99.975 more? or do I need to add solvent or สารกันเสีย ? สารกันเสีย Anything to add? Please give some advice. Thank you.

Hello Tretinoin is a pharmaceutical raw material only. The company will be able to provide any information or advice. If you are a medical personnel, pharmacist, or representative of a pharmaceutical factory before answering any questions Please submit documentary evidence to care@myskinrecipes.com