I heard that it is bad for shampoo to touch the scalp directly.
2023.07.21 00:29
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https://unpa.me/en-US/community/shampoo/7520238
It is really great to make a rich lather with a foaming applicator like this, apply it to your scalp and hair, and massage it into every nook and cranny.
I recommend using it this way. You can also save on the shampoo itself!