Incus Collagen Silky Serum

I first started using this product after purchasing it at a hair salon, and I liked it so much that I ordered it separately and have been using it for several years now.
If you buy it online, the price is also cheaper.
Rub an appropriate amount between your hands and apply it to slightly damp hair; it absorbs quickly, making straight hair calm, soft, and shiny, while naturally enhancing the curls.
It has almost no scent and isn't greasy, so it's great for light daily use.
Personally, the best thing about it is that it absorbs completely into the hair and doesn't leave any stickiness on my hands.