I've been using this for 4 bottles now. I had severe seborrheic dermatitis, so I was looking for a silicone-free shampoo and bought a large quantity during an event at Olive Young. Normally, when using a silicone-free shampoo, my hair feels stiff after washing, but this product doesn't have that issue as much, which I liked. The lather is also good. Based on my usage so far, the cleansing power seems adequate, and it doesn't seem to be an overly irritating product.

The only disappointment was the lack of a refreshing cleansing sensation that I had expected from the 'head spa' name.

Although it was called a 'head spa', I thought it would be good for the scalp, but instead, when I shampooed my hair with this, it became so soft and nice that I didn't even need a conditioner. Even when I used a scalp care shampoo, I used this for my hair, and the cleansing power was just right and it left my hair feeling moisturized and nice.

This was the biggest shock of my life when it came to shampoos. Even though my scalp was dry, as soon as I washed my hair with this, dandruff immediately appeared, and it was visible enough to see. My scalp is normally dry enough that I don't have to wash my hair for two days and it doesn't show, and if I don't wash it for three days, it's just about at the point of needing a wash. So this experience was really shocking to me. I thought it might be a coincidence, so I tried washing my hair with it several times, but it was the same every time. In the end, I put it away and used it as a hair conditioner shampoo for a while, and it worked well. But after searching the ingredients on Hwahae, I even got rid of that one.

If you're not too concerned about the ingredients being bad, it's an extremely rich shampoo that works very well as a hair treatment shampoo. I used a scalp shampoo on top and then used this on the lower part of my hair, and it worked great.