Rosemary Extract Reduces Dihydrotestosterone (DHT) in Hair Follicles


" Rosemary extract reduces the level of dihydrotestosterone in hair follicles by up to 94.6%."


The Health and Beauty Benefits of Rosemary Extract

Rosemary extract has long been known for its health and beauty benefits. The oil extracted from rosemary leaves is known to be capable of enhancing memory and increasing alertness, potentially can be beneficial for the treatment of Alzheimer's disease. In addition to its medicinal and culinary uses, rosemary oil is often used to revitalise hair follicles and maximise hair growth.

5-alpha-reductase and Dihydrotestosterone

5-alpha-reductase is the enzyme that converts testosterone to dihydrotestosterone. Both in men and women, it is estimated that up to 10% of testosterone in the body get converted to dihydrotestosterone.

In some individuals, dihydrotestosterone gradually reduces the blood flow to hair follicles. This process often takes place over several years until some of the hair follicles could no longer grow hair.

It is not uncommon for men to have suffered from hair loss from in their early twenties. However, women do not usually suffer from hair loss until in their forties. Androgenetic hair loss is the most common hair loss in both men and women. Left untreated, it can cause permanent, irreversible baldness.


My hair loss patient who started using Henry Tianus Hair Loss Solution Products one week ago, came to my clinic and told me that Henry Tianus products are FANTASTIC. His hair look healthier and stronger already." dr. Agustin Blanch, Spain learn more >>>


Rosemary Extract inhibits 5-alpha-reductase

A study published in the Phytotherapy Research showed that Rosemary extract inhibits the activity of 5-alpha-reductase by up to 94.6%.

By inhibiting the action of enzyme 5-alpha-reductase in hair follicles, rosemary extract reduces the conversion of testosterone to dihydrotestosterone. Lower levels of dihydrotestosterone (DHT) in hair follicles helps prevent androgenetic hair loss.

Rosemary in Androgenetic Hair Loss Formulas

Rosemary is one of my favourite ingredients for hair loss formulas. For best results, I combine rosemary oil with other hair growth stimulating ingredients like caffeine, niacinamide, menthol, cedarwood and thyme essential oils.


I used (Hair Growth) Serum every day for 30 days and my hair shedding has stopped. " Debra S. learn more >>>


I use rosemary essential oil as one of the active ingredients of Hair Growth Serum and Scalp Stimulator. Hair Growth Serum is a revitalising hair serum to reduce hair loss and promote hair growth that uses caffeine, niacinamide, menthol and rosemary essential oil as the main active ingredients. Scalp Stimulator is an intensive treatment oil that has been specially formulated with menthol, stabilised vitamin E, thyme, cedarwood, lavender and rosemary essential oils to strengthen and energise hair follicles. Both of these hair loss treatment products are suitable for men and women. 

To help reduce hair loss and stimulate hair growth, follow this recommended daily routine:

  1. Once a day, gently massage Scalp Stimulator to the affected area of the scalp. Leave for 20 to 30 minutes then shampoo it off. Dry your hair as usual with towel or hair dryer.
  2. Gently massage 1 to 2 pipettes (20 to 40 drops) of Hair Growth Serum into the scalp. Let it completely absorbed by the scalp then you can style your hair as usual. For best results, apply Hair Growth Serum every 12 hours. Personally, I use it every morning and evening (at night).

I believe that botanical extracts like rosemary oil, caffeine and menthol can reduce hair loss and promote hair growth better than the conventional medicines like minoxidil and finasteride. Botanical extracts often contain phytochemicals that also help improve the overall health condition. It may take longer to see the initial results, but with regular daily use, the long-term results may be better. Nevertheless, like with every ingredient, be it synthetic or natural, results are vary among individuals. Be patience and consistent. Hair can only grow up to a quarter of an inch per month, therefore, I highly recommend to use Henry Tianus Hair Loss Solution for at least 4 months to see visible results.


" After using so many products on the market, I tried this product. It’s two months now and I see hair growth. I found the product perfect. The customer support is brilliant. They are always in touch and answer you professionally. 100% recommended." Amir, Ireland learn more >>>



Henry Tianus is a multi-award-winning Anti-Ageing Scientist based in London, UK. Henry Tianus has been listed as The Recognised Institute Practitioner at The Institute of Traditional Herbal Medicine and Aromatherapy (ITHMA), London (UK) since 2005. Henry Tianus's articles have been read by people in more than 100 countries with US and UK at the top of the list. Join Henry Tianus eNewsletter to receive the latest health and wellbeing tips. 

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Scientific Sources:  Promotion of hair growth by Rosmarinus officinalis leaf extract. Phytotherapy Research, 2013 Feb, 27(2): 212-7; Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia: a randomized comparative trial, Skinmed (Dermatology for the Clinician), 2015 Jan-Feb, 13(1):15-21.

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