Osis pretty easy to find. salons n hair care shops (like Shins N K Care Shop) will carry all or some Osis products.

but the biggest challenge is finding good prices. Osis products have a ceiling price but i dun think got minimum price. some shops for example give 30% discount...some shops buy one free one. I heard Sg Wang has the highest concentration of shops selling Osis products. u could prob go there n compare prices n bargain. careful of fakes tho.

Most important when buying Osis products is...never pay full price. there will always be a another shop giving discounts.

30% off the tagged price is good. 50% off tagged price is an instant buy on the spot LOL.

10 or 20% is not good...buy only if u really in desperate need for hair styling product.

or u can just buy fr LYN seller named hair4me https://forum.lowyat.net/index.php?showtopic=1300123&hl=

his prices r one of the best around.

i got COD wit him b4. his products r ori. his shop is at Times Square.