A nurse is caring for an adolescent client who comes to the provider's office for treatment of acne vulgaris on her cheeks. Which of the following instructions should the nurse reinforce with this client and her parents?

A. While a healthy diet is beneficial, dietary intake of oily foods has not been conclusively shown to cause or worsen acne vulgaris. Strict dietary restriction is unnecessary and does not replace standard acne treatment. B. Friction, scrubbing, or vigorous washing can irritate the skin and exacerbate acne lesions. Gentle cleansing with a mild, non-comedogenic cleanser twice daily is recommended. C. Many acne treatments, such as topical retinoids, benzoyl peroxide, and antibiotics, can increase skin sensitivity to UV light. Clients should minimize sun exposure, use sunscreen, and wear protective clothing to prevent sunburn and additional skin irritation. D. Clients should avoid squeezing or picking at acne lesions, as this can lead to scarring, infection, and inflammation. Comedone extraction, if indicated, should be performed by a trained healthcare professional.