This treatment involves scrubbing off the top layer of dead skin.

这种治疗需要把死皮的表层除去。

《牛津词典》

She rubbed off the dead skin.

她擦掉了死皮。

《牛津词典》

Fish pedicure is a beauty treatment that involves immersing the feet in a tank of water containing Garra rufu fish, which nibble off dead and thickened skin.

鱼疗是一种美体方式，主要做法是将双脚浸在有墨头鱼游弋的水池中，让这些小鱼啃食除去足部的死皮和老茧。

youdao

It acts like a washcloth, helps remove dead skin cells and makes the soap last longer.

VOA: special.2011.03.09

It's really just the result of the virus dividing within cells of your skin, and producing a lot of dead cells.

这便是病毒在皮肤细胞内部,分裂的结果,这个过程会产生大量的死亡细胞

耶鲁公开课 - 生物医学工程探索课程节选

That is when the virus releases its attack, spreading when the dead skin cells flake off the body naturally.

FORBES: Cornering A Killer

Ohana Gingergrass Bamboo Scrub, from the line Red Flower, may not be pretty (overlook its resemblance to dirt) but the crushed bamboo is both gentle and effective in sloughing off dead skin, while the ginger and bergamot work to increase circulation.

WSJ: Maintaining the Gloss | Outer Beauty

He kept his eyes on his hands, folded in his lap, and he picked at dead skin around the nails.

NPR: Excerpt: 'Hero'