Fact Check: Toothpaste, shampoo, and Eno do not whiten skin
Dr Iram Qazi explains that toothpaste and shampoo contain surfactants and abrasives unsuitable for skin, potentially causing irritation, dryness, and contact dermatitis. Empirical evidence does not support their effect on melanin synthesis; skin tone is largely genetically determined and can only be naturally enhanced, not instantly altered.