hot spring good for the skin; skin-beautifying bath
Used for hot springs or baths believed to improve skin condition. Common in travel and onsen descriptions.
この旅館の美肌の湯は、女性に特に人気があります。
The skin-beautifying hot spring at this inn is especially popular with women.
Compound of 美肌 (bihada, 'beautiful skin') + の (no, possessive particle) + 湯 (yu, 'hot water' or 'hot spring').