Where should I test the fermentation ingredient ampoule?



fermentation-ingredients ampoule

I'd like to use an ampoule with fermented ingredients.

It's really good if it fits, but if it doesn't, I'm going to test it. It's hard to do it on your face, and can you tell me where it'll react?

Is it similar if I try it on the back of my hand?

I haven't used fermentation ingredients, so I don't know.


440 2018-07-12 Lady

A. 1

You can test it on your neck


Lady 6 years ago 0

A. 2

Neck or chin


Lady 6 years ago 0

A. 3

Thank you.


Lady 6 years ago 0


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