Medical Library

Welcome to our medical library. Here you’ll find easy-to-read articles that cover everything you need to know about male and female hair loss, as well as overall hair health and wellness. They’re all reviewed by our doctors, so you can trust that they’re scientifically accurate. 

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Hair HealthCollagen powder, commonly used to help hair growth.

Does collagen help hair growth?

Collagen has been shown to play a part in regulating the hair cycle and supporting the normal development of hair and skin cells. But how much should you take and is it really as effective as the b...

Female Hair LossYoung couple looking for signs of hair loss.

3 Ways to Support Your Partner with Hair Loss

For many people, hair loss is a sensitive issue. But what if that person is someone you know and deeply care about? What's the best way to support your partner with hair loss? Read our guide on how...

Hair HealthWoman using hair thickening shampoo.

Hair Thickening Shampoos: Do They Work? Q&A with Dr. Han

Hair thickening shampoos are one of the most popular categories of hair care products. But do they actually work and how do you make sure that you're picking the right one? Join us in this editoria...

Hair HealthMan applying minoxidil for beard growth.

Minoxidil for Beard Growth

When it comes to patchy or sparse beard hair, there is no shortage of treatments that claim to be effective. But do any of these actually work? Minoxidil has been identified as a potential treatmen...

Hair HealthVariety of vitamins to treat vitamin deficiencies that cause hair loss.

Which Vitamin Deficiency Causes Hair Loss?

There's considerable debate about the usefulness of taking vitamins and supplements to treat a specific issue like pattern hair loss. We know that vitamins and minerals play an important role in th...

Female Hair LossWoman contemplating pregnancy and hair loss.

Pregnancy and Hair Loss

Postpartum hair loss is a common issue faced by new mothers and it's caused in part by hormonal changes that occur shortly after delivery of the baby. In many cases, post pregnancy hair loss resolv...

Female Hair LossPCOS hair loss is a potential side effect.

PCOS Hair Loss

It's believed that PCOS affects approximately ten percent of women in their reproductive years. The signs and symptoms of this hormonal disorder can include dermatological issues like acne, excessi...

Hair HealthExercising man using steroids and hair loss.

Steroids and Hair Loss

Anabolic steroids are performance enhancing substances that mimic the effects of male sex steroid hormones. There has been speculation that anabolic steroid use can cause hair loss in some men. The...

Hair HealthCGI rendered image of hairs emerging from scalp to illustrate the hair growth cycle.

How Does Hair Grow? The Hair Growth Cycle

The hair growth cycle can be broken down into three main stages that describe the process through which the hair follicle produces a healthy hair. These stages are anagen, catagen and telogen.

Hair HealthMan with advanced hair loss according to the Hamilton Norwood scale.

What is the Hamilton-Norwood scale?

Male pattern hair loss is assessed using a tool called the Hamilton-Norwood scale. A person's Norwood score provides a visual indication of how advanced their hair loss is and can provide valuable ...

Hair HealthYoung man lifting weights exploring relationship between working out and hair loss

Does Working Out Cause Hair Loss?

Exercise temporarily increases levels of testosterone and the stress hormone cortisol. Reactive oxygen species (ROS), which are metabolic byproducts, also increase in concentration. Do these change...

Hair HealthMan touching thyroid gland for signs of hypothyroidism leading to hair loss.

Hormones and Hair Loss: Hypothyroidism

Thyroid hormones and thyroid dysfunction can have dramatic effects on hair health. It's important to be aware of the differences between hair loss due to the thyroid and other causes, as treatment ...

Hair HealthYoung man in mirror worried about link between testosterone and hair loss.

Does testosterone cause hair loss?

It's no secret that androgens contribute to the development of pattern hair loss in people with a family history of hair loss. But does testosterone cause hair loss? Or is the hormone story a bit m...

Hair HealthMan shampooing his hair demonstrating how to practice optimal scalp health.

Scalp Health: 101

The scalp is more than just a layer of skin on your head. It's the foundation for great hair and requires adequate hygiene, nutrition and protection to function optimally.

Hair HealthYoung female doctor holding up a model of scalp anatomy.

Scalp Anatomy: The 5 Layers Of The Scalp

The scalp consists of five specialized tissue layers that protect the skull and provide structure for hair follicles. It's also the means through which oxygen and nutrients access developing hairs.

Hair HealthCloseup of red clover plant, the source of red clover extract known for its hair growth benefits.

Red Clover Extract for Hair: Can Red Clover Help Regrow Hair?

XYON’s shampoo and conditioner line features red clover extract as a key ingredient. It's been found to help stimulate hair growth, thicken hair and reduce scalp inflammation and may be helpful in ...

Hair HealthMan in shower using saw palmetto shampoo to help with hair loss.

Saw Palmetto Shampoo: Does It Help With Hair Loss?

Saw palmetto, the active ingredient in saw palmetto shampoo, has been found to have DHT-lowering capabilities, similar to finasteride and dutasteride. In this way, saw palmetto shampoo may be a use...