This AHA was far too strong for my skin and I don't have sensitive skin. It is a clay mask, which you apply for 1-5 minutes "as you can tolerate". The first time I used this I did the full 5 minutes and it stung like crazy and left my skin almost burnt. The next time I did one minute and my skin still felt burnt. Then I binned it.
The packaging is functional in a little tub and has a sponge applicator.