While there’s some room for nuance (not everyone’s skin is the same), it’s generally important to strike the perfect balance between hydration, moisturization, and exfoliation. With dermatologist insight, we’ve rounded up a list of the commonly overused skincare ingredients so you can improve your practice. “The recommended frequency of use depends on the concentration of the acids and how accustomed your skin may be to the acids or to skin exfoliants in general,” says Blair Murphy-Rose, MD, a board-certified dermatologist based in New York City. Her advice? Take the recommended usage frequency listed on the packaging and start with half that amount for the first two weeks. Then, listen to your skin and adjust as needed. Also, if you’re a multi-step skincare person, be aware of the active ingredients in your entire regimen. Ideally, you should only apply one product that contains AHAs per session. Too much of this zit-zapping, exfoliating ingredient can backfire on you, so follow the on-label usage instructions to a T. For example, if it’s a spot treatment, do not use it all over your face. If it says to let it set for 15 minutes before rinsing, watch the clock. And of course, abide by the frequency recommendation listed on the packaging. While mild cases of these symptoms are expected, it’s important to build up a tolerance so your skin doesn’t freak out too much. “Retinol is an ingredient that should be eased into. Start with a lower percentage and then increase over time,” advises Tina Alster, MD a board-certified dermatologist in Washington DC. “You may have to make seasonal adjustments, as well,” Dr. Murphy-Rose adds. “For example, during drier months, you may tolerate a retinol-containing product less frequently than during a more humid time of year.” “TCA dissolves the mortar that holds epidermal cells together and helps to shed dead skin cells,” explains Dr. Alster. “This chemical exfoliation, if used too often, can cause skin redness and irritation.” While the majority of TCA peels are administered in-office under the care of a professional, over-the-counter TCA peels also exist. These are far less potent, but you still need to use them with care. As always, follow on-label instructions and ease into usage. “[Too much oil] can clog pores, cause open comedones (blackheads), and lead to sebaceous gland hypertrophy [aka enlarged pores],” explains Stefani Kappel, MD, a board-certified dermatologist in Corona Del Mar, Calif. While you don’t have to give up oil entirely, do listen to your skin and use your best judgment. And when you can, swap in lighter “dry” oils, such as rosehip and camellia. Praises sung, this ingredient is super potent and should be used sparingly. Also, it’s completely off-limits if you’re pregnant or breastfeeding. “There is a side effect called ‘ochronosis’ that can occur with chronic use of hydroquinone,” warns Dr. Murphy-Rose. “For those who do choose to use hydroquinone, use maximum twice a day for no more than five months.” If you’d rather use an alternative ingredient, consider vitamin C, niacinamide, kojic acid, and glutathione.
