sebum; skin oil
Refers to the oily substance secreted by sebaceous glands; used in dermatology and skincare contexts.
If too much sebum is secreted, pores tend to get clogged.
この洗顔料は余分な皮脂を取り除きます。
This facial cleanser removes excess sebum.
sebaceous gland
Compound of 皮 (skin) and 脂 (oil/fat), literally 'skin oil'.