expression, godan verb (-u)
suit one's skin; agree with one's skin
Used for cosmetics, skincare products, or fabrics that do not cause irritation or allergic reactions. Literally 'match the skin'.
この化粧水は私の肌に合わなかった。
This lotion didn't agree with my skin.
新しい洗顔料が肌に合うかどう
I tried out whether the new face wash suits my skin.
expression, godan verb (-u)
be compatible; get along well; be to one's liking
Idiomatic extension: something (a person, environment, job, etc.) fits one's nature or preferences. Often used in negative form 肌に合わない to express discomfort or mismatch.
彼とはどうも肌に合わない。
I just don't get along with him.
この仕事は自分に肌に合っていると思う。
I think this job suits me.