Layering Products Question...

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May 29, 2017

Natalie J.

Hello All!

I'm wanting to add the Niacinamide 10% / Zinc 2% serum into my nightime routine. I know it says you shouldn't use it will Vitamin C... what about Retinoids? Can I layer it with my Advanced Retinoid 2%?

May 29, 2017

Katia A.

I know you for sure can combine niacinamide with retinol! From the blogs I've read, it's clear you shouldn't combine niacinamide with vitamin c. I'm not sure about Zinc but I think that works fine with retinol too.

May 30, 2017

Leuca S.

This niacinamide/vitamin c thing is a very common misconception based on a chemical reaction that does indeed occur when niacinamide comes in contact with ascorbic acid, but they do not "cancel" each other as many people would have you believe.

If you don't believe me, you can read the specifics from an actual cosmetic chemist rather than the lay people that write most beauty blogs.

http://kindofstephen.com/can-you-use-niacinamide-and-vitamin-c-ascorbic/

May 30, 2017

Leuca S.

As for your second question, there is very little you cannot use with niacinamide; it's a very stable molecule and more often than not helps stabilize other ingredients it's formulated with.