Because the beautician told me to just exfoliate the night before going to have it done again - and I have loads - one I put Freederm on last night and just squeezed it (Sorry TMI!!) and it went off like bloody Vesuvius! It is super painful and I have a few as was very brave and had a Brazillian - although it doesn't improve your sex life just makes more of your noonoo flaps look like a bloody plucked chicken!