DHT Blockers for Hair Loss: What They Are and How They Work
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The Tui & Moon Hair Journal
If your hair is becoming finer, your part is widening or your hairline is changing, DHT may be one of the reasons why.
DHT is a hormone naturally found in the body. For some people, hair follicles are particularly sensitive to it. Over time, this can cause hair to grow back thinner, shorter and less visible.
Understanding DHT can help you make better choices for your scalp-care routine and choose ingredients that support stronger, fuller-looking hair.
The simple explanation
What is DHT?
DHT is a hormone linked to pattern hair thinning. In people who are sensitive to it, DHT can gradually shrink the hair follicle, causing each new strand to grow back finer than before.
How does DHT affect hair?
Hair grows from tiny follicles beneath the scalp. When those follicles are sensitive to DHT, the normal hair-growth cycle can become shorter.
This means the hair may spend less time actively growing. New strands can gradually become finer, softer and shorter.
This process usually happens slowly, which is why people often notice a wider part, a smaller ponytail or more visible scalp before they realise their hair is thinning.
Common signs
What DHT-related thinning may look like
- A widening centre part
- Thinning around the temples
- Less volume at the crown
- A gradually receding hairline
- A smaller or thinner ponytail
- More visible scalp in certain areas
DHT is not the only cause of hair loss. Stress, postpartum changes, menopause, illness, low iron, thyroid changes and scalp conditions can also affect shedding and density.
What are DHT blockers?
DHT blockers are treatments or ingredients used to reduce the effect DHT has on sensitive hair follicles.
Some are prescription medicines, while others are natural ingredients used in scalp products.
Natural options are often chosen by people who want a gentle, easy-to-follow routine that supports the scalp and hair follicles without adding a complicated treatment step.
Natural ingredients used for DHT-related thinning
Rosemary
Rosemary is one of the best-known natural ingredients for thinning hair. It is commonly used to support scalp circulation, follicle activity and a healthier scalp environment.
Caffeine
Caffeine is used in scalp products because it can reach the hair follicle and support the activity involved in healthy hair growth.
Green tea
Green tea provides antioxidant support and helps maintain a balanced scalp environment around the follicles.
“Supporting the scalp early may help maintain the appearance of thicker, fuller-looking hair over time.”
Why we pair rosemary with caffeine
Rosemary and caffeine work well together because they support different parts of a healthy scalp routine.
Caffeine supports follicle activity, while rosemary helps create a refreshed, balanced scalp environment.
Our formula also includes aloe vera, green tea, ginseng, kawakawa and pro-vitamin B5 to help soothe, hydrate and support the scalp without leaving the roots greasy.
This combination forms the base of our Rosemary & Caffeine Scalp Spray .
Why a leave-on scalp spray is useful
A leave-on spray allows you to apply active botanical ingredients directly to the scalp without rinsing them away.
It is also easy to use between wash days and can be applied to the hairline, part and crown where thinning is often most noticeable.
Most importantly, it makes daily consistency much easier.
A simple daily ritual
Rosemary & Caffeine Scalp Spray
A lightweight, non-greasy leave-on scalp spray made with rosemary, caffeine and New Zealand kawakawa.
Designed to support a refreshed scalp, reduce the appearance of shedding and encourage fuller-looking, healthier-looking hair.
Shop the scalp sprayHow to use it
Frequently asked questions
Is DHT responsible for all hair loss?
No. DHT is mainly connected to pattern hair thinning. Other causes include stress, postpartum changes, menopause, illness, nutritional deficiencies and scalp conditions.
Can women be affected by DHT?
Yes. Women may notice a widening part, reduced density through the top of the scalp or a smaller ponytail.
Is rosemary a natural DHT blocker?
Rosemary is commonly used in natural hair-care products for thinning hair because it supports scalp circulation and follicle health.
Does caffeine help with DHT-related thinning?
Caffeine is used to support follicle activity and help create more favourable conditions for fuller-looking hair.
How long should I use a scalp spray?
Hair changes take time. Use it consistently for several months and take monthly photographs to track gradual changes.
The bottom line
DHT can contribute to gradual thinning in people whose hair follicles are sensitive to it.
A consistent scalp-care routine using ingredients such as rosemary and caffeine can help support the follicles, improve the scalp environment and encourage healthier, fuller-looking hair.
Explore the Tui & Moon Rosemary & Caffeine Scalp Spray .
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