Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to reduce sebum production [title] Get a prescription for retinoids. [step] If you are struggling with excess oil and acne, you may want to talk to a dermatologist about retinoids. This type of medication is one of the most prescribed treatments for acne and excess oil production.

Ending1: [substeps] Retinoids often be prescribed by experts. Despite their reputation as safe and effective, people should avoid them since they may lead to acne in some people and increase acne. Ending2: The formula does not only contain these ingredients, but acne boosts the gland's production of melanin, a critical indicator of a healthy skin condition. Retinoids can also help lower or evaporate excess oil (uv). Ending3: Retinoids are not available in pill form and are only taken internally as needed. Consult your doctor if there is a particular age or gender of your acne affected by a retinoid treatment. Ending4: You can get an oral retinoid, like accutane, or topical medications, like tretinoin, adapalene (which is now available over the counter), tazarotene, and isotretinoin. Oral retinoids are generally more effective than topical ones.

Answer format: ending1/ending2/ending3/ending4