I love Josie Maran's sunblock. I have used this powder in it, and I would not recommend mixing them! First off, the powder makes the sunblock VERY watery, to the point that it's hard to apply. I mix them in a 1/8 teaspoon (to ensure I'm applying enough), and I'm literally pouring it onto my face. Secondly, when the watery sunblock dries on my face, it is very sticky and flaky.
I HATE what this powder does to the texture of the JM sunblock. I'm only using it until I buy a designated ascorbic acid serum. If you're set on using this powder, I would apply it with a serum or moisturizer before putting on the sunblock--I've had a little more luck with mixing it into these products. On the bright side, if you don't mind the texture, there shouldn't be any negative ingredient interactions between the products, and the Vitamin C will actually add a small boost in UV protection.
answered 2 years, 6 months ago
If you use it in the day you MUST mix it with sunscreen otherwise it will do more damage than good. I find that it is ideal when mixed with night cream. I only use it at night to stretch the product since it's kind of pricey, and I get compliments on my skin almost daily.
answered 3 years, 8 months ago
I would assume so, but i'm no professional. my biggest worry is if it would degrade the oil you mentioned in your sunscreen and I'm not sure where you can go to get a sure answer to that, maybe try a website dealing with chemistry.
answered 4 years ago