When your face feels greasy and your pores become congested, you can remove gunk and control oil by incorporating beta hydroxy acids, or BHAs, into your daily skin care routine. But what exactly are ...

It’s almost 2023, and by now, you’ve undoubtedly tried (or been pressured to try) a chemical exfoliant, whether it be a AHA vs. BHA vs. PHA. The only issue? Decoding WTF they all mean and figuring out ...

AHAs, like glycolic acid, are water-soluble and work​ on the surface of the skin. Using these ingredients gently sheds dead ...

Vitamin D is essential for many bodily processes, particularly the development of healthy bones. A 25-hydroxy vitamin D test can reveal whether the vitamin D levels in a person’s blood are within a ...

Alpha hydroxy acids (AHAs) are a group of acids that occur naturally in fruits, sugar cane, and milk. Benefits of AHA include exfoliation, improved skin texture, and acne reduction. Popular uses for ...

Lactic acid is a gentle AHA exfoliant that removes dead skin cells to hydrate, lighten dark spots, and improve overall ...

(Hydroxy)chloroquine is a medication originally developed to prevent and treat malaria, later used for autoimmune conditions like lupus and rheumatoid arthritis. Once inside the body, it alters the ...

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Doctors use the 25-hydroxy vitamin D test to monitor your vitamin D levels. Low levels can mean you need to spend more time outdoors or adjust your diet. But it can also occur with certain medical ...