Spa can repair hair damaged by dyeing. The main function is to moisten hair and provide nutrition. Dry hair like that will become moist and smooth after spa care. But the spa will take a long time. I only do it once a week. This will be really effective. Originally, my hair was dry and easily broken because of perm and dyeing, but now it is better. At least it's moist and won't lose hair when washing your hair-_-\ \ \

Finally, I suggest you bring your own spa, but you can buy it at the barber shop. Because this kind of thing belongs to professional hairdressing products, it seems that it is rarely sold outside.