And among this growing category of products, there’s a sub-category that’s also experiencing a popularity boom.

Read on for what they had to say.

The nutrients from the berries can diminish the impact of DHT on the hair follicles," explains Gaunitz.

Herbs for Hair Growth

Liz DeSousa for Byrdie

How to use it:It should be taken orally.

The same directions apply as for rosemary oilmassage onto the scalp for five to 10 minutes before shampooing thoroughly.

How long it takes to work:According to Yates, about four months.

“Taking care of the scalp benefits overall hair growth,” says Yates.

As with the other herbs, it will take a few months for any growth-related effects to kick in.

He adds that this makes it ideal for those dealing with inflammatory scalp conditions such as seborrheic dermatitis anddandruff.

(Many teas combine the two.)

There are a few important universal caveats to remember when it comes to herbs and hair growth.

One, remember that the causes behindhair lossand scalp issues are usually multi-factorial and can be tricky to pinpoint.

Two, natural doesn’t always mean harmless, she cautions.

Before taking any of the aforementioned herbs orally, be sure to discuss with your doctor.

At the end of the day, hair loss is a complicated issue.