Duo-A
This product is amazing. Easy to apply. Dont forget moisturiser after. I did two times & my face was sore & peeled. It is easy to think if you use it alone it works quicker. It does not. I have used serum 24 on alternate nights so thought it would be easy. Follow the advice. ALl Cosmedix products they are excellent & well worth investing it. Thank you Cosmedix for yet another great product 👏