do a skin test on a small area first [SEP] my poor husband has very sensitive fellas right now it worked okay on his chest but think the skin in his nether regions is much too sensitive he had purchased nad s for men but i was afraid it would be too strong for his sack so i got this i really wish he would have listened and did a test spot first lol he said i did do a test spot on all of my balls he says the calm balm burns as well not all his chest hair is gone either maybe he needed a thicker layer he s not very hairy either i m thinking it ll now be mine for arms and bikini i ll update the review after trying