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Ruthieandskincare
Сухая
The LRP vit c can be use daily in AM.
Niacinamide better get concentration between 3-5%, 10% is quite high. Can be use daily AM and PM.
PC BHA 2%- best use at night once a week to start no more than 3x per week
Retinol- best to start on the lowest concentration once a week at night. Separate this from BHA, VIT C. Ok to use with Niacinamide
You should be patch testing and testing the product INDIVIDUALLY in your routine for a minimum of 2 weeks before introducing another product
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