As a deo, it works really well. The first time I tried it, I had only wiped the product on my left underarm. I was surprised by how well it performed as an anti-perspirant! During my mid-day check-in, my left underarm had absolutely no signs of sweat and oil. I continued to use this and its results were consistent regardless of how much I moved in a day. However, as a whitening solution, you’d probably need more than one bottle to see a significant difference. At the very least, I did notice my underarms had become smoother and less prone to ingrown hair. The ingredients list is a bit hard to read but this might have been the result of the toner containing niacinamide and licorice extract. As it is more expensive than regular store-bought deos, it would probably be best to skip this if you aren’t hiyang to whitening ingredients like kojic. Luckily, the formula was compatible with my skin so I didn’t experience darkening, staining, or getting funky smells. It is lightweight and it absorbs quickly like facial toner. I’ll consider repurchasing if there are no other alternatives at par with it.