qilss
Grasa/Resistente
I'm not really a facial oil person but when I do use it, it'll always be at the last step. That or I mix in the oil with moisturiser. So if it were me, azelaic acid > moisturiser > facial oil
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Practiceforskin
Seca/Resistente
This would go in the serum step, if you use multiple serums, you’d apply this just before a moisturizer
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