This is a shampoo that I reach for often, even during the rainy season.

I am currently using the Honest Lab Botanic Houttuynia Tea Tree Shampoo. I usually prefer tea tree and Houttuynia cordata ingredients as a preventative measure due to skin troubles, and this is a product I have been using without any adverse reactions. During the rainy season, the humidity makes my hair greasy, so I tend to hesitate to use conditioner. However, this shampoo leaves a soft finish, just like using conditioner, so I don't feel the need to use it. Another advantage is that it lathers really well with just one pump. The ingredients aren't bad, and since it is available in the low 10,000 won range, I plan to repurchase it once I finish this bottle!