While not all of your favorite products are going to be consideredunsafe for pregnant and breastfeeding women, some should not be used. Dr. Karan Lal, a cosmetic and medical dermatologist, recommends avoiding certain skincare ingredients even when trying to conceive. Dr. Lal told The List, "I usually tell all of my patients if they are trying to conceive that, they need to cut out their: topical retinoid, retinol, and hydroquinone." He added that it's uncertain to what extent these topical ingredients are absorbed into the bloodstream, potentially reaching the placenta, as most of these recommendations are based on theoretical risks. However, it's better to be safe.

Retinoids are known for their anti-aging benefits, but it seems best to set them aside during these times. Dr. Lal told us, "Retinoid and Retinols are all vitamin A derivatives, and high doses orally can cause bone, neurological, facial, and thymic birth defects which can be devastating. These are labeled pregnancy category C meaning animal reproduction studies have shown an adverse effect on the fetus, but there are no adequate and well-controlled studies in humans."

Though retinoids are miracle workers to help diminish fine lines and combat acne, it's one ingredient you shouldn't be using. "Those molecules have pretty good data showing that they can affect embryo development in the first trimester," Dr. Abigail Waldman of Mohs and Dermatologic Center at Brigham and Women's Hospital told The Strategist.

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Dermatologist Reveals The Skincare Ingredients Pregnant & Nursing Women Should Avoid Exclusive - The List