How fast does coconut oil works for stretch marks???

Unfortunately, if you have stretch marks, you can't just get rid of them. Or stop them.

They come (or don't) based on your genetics. You can, however, use creams after the fact to fade their appearance.

been using coconut oil religiously and my stretch marks are finally coming in. .very hard to prevent them but everyone is different

I've been using it before but I have stretch marks now

It helps to prevent stretch marks because it replaces lost fatty acids and thoroughly moisturizes your skin. It does nothing for current stretch marks though. Just moisturizes the skin.