Remember — natural oils are beneficial, so don’t entirely strip them for the sake of cleaner-looking hair.

Maintenance: Wash oily hair daily with a mild, detergent-based shampoo. Concentrate on the roots. “It’s your scalp that’s oily, not your hair,” says Mitchell Barnes, co-owner of Carter-Barnes Hair Artisans, in Atlanta. Rinsing out the suds cleans the strands sufficiently. After you shampoo, use a light conditioner from midshaft to the ends. “This allows you to detangle safely without breaking fragile, thinner hair,” says dermatologist Marianne O’Donoghue.

Styling: “Because oil blocks the follicles, oily hair is usually fine hair,” says salon owner Johnny Lavoy. Avoid silicone, heavy pomades, and creams and opt for an airy mousse, applying it at the roots to add fullness.

Common Misconception: Oily hair doesn’t need to be conditioned. You must replace lost moisture with conditioner, especially if you shampoo every day. Apply only where needed, beginning at the ends.

What’s to Love: You save money on styling products. Stick to the basics, like a volumizing mousse, and skip the masks, the creams, and the serums.

RS Picks for Oily Hair

Frédéric Fekkai Apple Cider Clarifying Shampoo ($19.50, www.sephora.com) rids hair of buildup and impurities.

Dove Beautiful Care Conditioner ($4 at drugstores) helps maintain hair’s moisture balance.

Garnier Fructis Style XXL Volume Thickening Mousse ($4 at drugstores) adds body and holds it in place.