More than 50% of women will experience hair loss at some point or another, according to research. The most common causes of this hair loss? Stress, hormonal changes, medications, genetics, and hair products that irritate the scalp, says dermatologist Dr. Peterson Pierre.

Depending on the causes of your hair loss, you may need to use both a topical hair loss solution as well as take a hair loss supplement to truly treat your issue, says William Gaunitz, a certified trichologist (hair and scalp specialist) and founder of Advanced Trichology, So which hair loss products are worth trying?

Here, we’ve researched the best hair loss treatments to help you out.

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You don’t get far into any manner of research about skincare basics without running into the intimidatingly spelled hyaluronic acid, pronounced hiya-lure-onic. But what it lacks in linguistic ease, hyaluronic acid (or HA) makes up for in simplicity and straightforwardness of application. Hyaluronic acid is one of the most effective, dependable, and accessible moisturizers available in the entire complexion armamentarium. We asked dermatologists to break down hyaluronic acid’s benefits and uses–so let’s take a knowledge journey into the wonderful world of this moisture-retaining magic acid, shall we?

“Our bodies make hyaluronic acid regularly, but in our late 20s, that production starts to decrease, which leads to the unwanted signs of aging,” says dermatologist Peterson Pierre, of the Pierre Skin Care Institute in Thousand Oaks, California.

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The fillers we are talking about are all FDA-approved for the treatment of lines and wrinkles. But that doesn’t mean they are without risk.

“Filler injection is a medical procedure and should only be performed by the most skilled injectors with a thorough knowledge of anatomy,” says Pierre. That sounds, well, obvious, but aestheticians and third-party vendors can offer the treatments at discount prices, which is extremely tempting but most definitely not advised. Go to a doctor, period. Not only can the result be aesthetically non-ideal–uneven, clumpy, bumpy–but there can also real risk.

“Filler injection appears to be a deceptively simple procedure that can quickly lead to complications in inexperienced hands, the most serious of which is blindness,” Pierre continues. Even with a skilled practitioner, expect redness, bruising, swelling, and tenderness in the day after your procedure.

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It’s generally said that diet and stress cause acne, but there are specific reasons that these two factors give us flareups. Because acne is an inflammatory skin condition, “anything that increases inflammation can trigger or worsen acne,” explains Peterson Pierre, MD, of the Pierre Skin Care Institute. “Stress releases pro-inflammatory hormones in the body and high-sugar foods can also increase inflammation in the body. These rules aren’t universal, of course, but can contribute to acne.”

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