When it comes to the rainy season, nothing beats Dr. For Hair shampoo.

It's famous as a hair loss shampoo, and I actually saw great results even during the rainy season. You can feel your hair becoming calmer immediately after just one wash!! I really love it and use it well. It is a bit pricey, but the bundle deals on Coupang are the cheapest, so I just buy those. Since my hair is long, I use it up quickly regardless of whether it's a large size or not, so I just stock up in bulk and forget about it. I highly recommend it!