product testing

I've asked the same question on my discussion. Maybe you can have a look 😊

No, i just keep the same routinen and only add this one product. So I notice how my skin changes because of the product

Agree with the above. I make sure to continue using the same products that I had been using and then add the new product because otherwise I wouldn't be able to say how the new product worked/what it did.

ok

I just add one new product at once and if my skin acts weird I know the reason bc I’ve changed only one product.