I recommend Daiichi Treatment.

I bought it at a hair salon, and I've been using it for 4-5 years.

I think it worked. I used acidic shampoo on wet hair.

If you finish with this, it contains vitamins plus avocado and jojoba oil, forming a protective barrier and moisturizing your hair, leaving it soft and smooth.

The price is 35,000 won for 170ml.