Whey protein: Its insulinotropic properties can stimulate oil production, leading to clogged pores and breakouts.
Biotin: Excessive supplementation may disrupt gut bacteria balance, potentially worsening acne.
Iodine: High levels can stimulate oil gland activity, increasing sebum production and acne formation.
Vitamin B12: High doses may disrupt skin bacteria balance, contributing to acne development.
DHEA: This hormone supplement can elevate androgen levels, leading to increased oil production and acne severity.