FAQs
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What is the Density & Repair Scalp Serum?
The rhute Density & Repair Scalp Serum contains 16 clinically proven active ingredients, including peptides to strengthen hair, caffeine to stimulate follicles, niacinamide to support the scalp barrier, salicylic acid to gently exfoliate, hyaluronic acid for hydration, and plant stem cell extracts to encourage renewal. Together, these ingredients help improve hair density, reduce shedding, balance natural oils, and keep the scalp healthy and hydrated.
What makes the Density & Repair different from other scalp serums?
Most products only target one issue. Meaning you have to spend more money on multiple products to ensure your hair gets the attention it deserves. rhute’s formula addresses density, shedding, the scalp barrier, and hydration all at once - so you get more for less.
Check out a breakdown of our ingredients and their benefits below:
- Peptides – Support stronger, thicker-looking hair by boosting protein structure.
- Stem Cell Extracts – Stimulates collagen around the base of hair follicle, reducing shedding.
- Caffeine – Helps reduce shedding and energises follicles for growth support.
- Saw Palmetto – Blocks DHT, a hormone associated with hair thinning
- Niacinamide – Strengthens the scalp barrier and helps regulate excess oil.
- Salicylic Acid – Gently exfoliates to clear buildup and create a healthy base for growth.
How was the formula developed?
It was created by Consultant Dermatologist Dr. Aamna Adel, so every ingredient is intentional, effective, and safe for sensitive scalps.
Who is the density & repair serum for?
Anyone concerned with hair shedding, thinning, buildup, dryness, or scalp imbalance. The formula have been tested on:
- Women of all ages, including new mums and perimenopausal women
- People who wear braids and extensions
- Men of all ages, including those with signs of early hair thinning
The formula is fragrance-free, clinically tested and suitable for sensitive scalps.
How do I use the density & repair scalp serum?
Use rhute’s Density + Repair serum daily on dry or damp hair. Follow the below steps:
Step 1: Use our 4 by 4 method. First, divide hair into 4 equal parts
Step 2: Use 1 pipette full per section, dispensing drops evenly along the scalp. One pipette should cover your whole scalp - add a little more if focusing on specific areas like your parting or hairline.
Step 3: Use your fingertips to gently massage the serum into your scalp in circular motions for 1–2 minutes (or up to 5 minutes for extra stimulation).
Step 4: Do not rinse. Leave the serum on your scalp for at least 4 hours to allow full absorption.
Can I use it with other products?
Yes! rhute’s Density + Repair Serum was designed to tackle a number of concerns while still being lightweight and easy to layer with the rest of your haircare routine. It won’t interfere with your regular styling products, and with its 16 active ingredients that support your hair health and growth throughout the hair cycle, rhute cuts the fuss — one formula, no time-consuming routine needed.
You can use the serum in conjunction with minoxidil or other hair serums if you choose to. It is best to use these at different times or when one has dried before applying the other.
How soon will I see results?
You may notice immediate relief in scalp comfort and hydration — that’s your first sign it’s working. For density and shedding, consistency is key. After:
- 1 - 2 weeks: Scalp feels soothed. Less dry, itchy and flaky.
- 4 - 8 weeks: Hair follicles are stimulated and strengthened.
- 8 - 10 weeks: Follicles are fortified.
- 12 - 16 weeks: Tighter parting, baby hairs that have grown out - and a thicker, fuller ponytail.
The longer you use the serum, the better the results. Healthy hair takes time. Consistency is key.
Will it make my hair greasy?
No, we went through countless rounds of revisions to get the texture just right. A lightweight, fast-absorbing formula comfortable enough for daily use. The formula was carefully balanced with ingredients like salicylic acid and niacinamide, which help regulate excess oil and reduce greasiness. That means you can apply it morning or night without worrying about buildup or disrupting your style.
Can I use it if I colour my hair?
Yes, the formula is safe for colour-treated and chemically processed hair. It’s designed to support scalp and hair health without stripping, drying, or interfering with treatments, making it suitable for all hair types and textures.
How long does one bottle last?
With daily use, one bottle lasts about 4 - 6 weeks. If you’re focusing only on specific areas (like a parting or hairline), your bottle may last even longer.
Can I use the serum while pregnant or breastfeeding?
All of the ingredients in our formula are considered safe for use during pregnancy and breastfeeding. However, we always recommend consulting your own medical practitioner before introducing any new product into your routine.
The percentage of salicylic acid in our formula is below 2%, which is within the level considered safe for pregnancy and breastfeeding, as reviewed and confirmed by our regulatory team.
Is the density & repair scalp serum vegan?
Yes, the Density & Repair scalp serum is vegan and was not tested on any animals.
Can I used a discount code on a subscription order?
Our subscription already gives you 10% off every order - no code needed! Because it's the best deal we offer, additional discount codes (including welcome codes) can't be applied to subscription orders.
Are rhute products safe for those with nut allergies?
Yes. rhute’s scalp serum does not contain tree nut or peanut-derived ingredients and is free from common nut allergens such as almond, walnut, hazelnut, macadamia, cashew, pecan, pistachio, Brazil nut, and peanut oils or extracts.
What should I expect the serum to smell like?
rhute’s scalp serum is fragrance-free and does not contain added perfumes or essential oils. You may notice a subtle, natural scent from the active ingredients - including botanicals and peptides - which quickly dissipates after application. This ensures the formula remains gentle, suitable for sensitive skin, and focused on performance rather than masking its natural profile.
How should I use rhute’s scalp serum for the best results?
For optimal results, apply rhute’s scalp serum once daily to a dry or wet scalp. Part hair into sections and use the dropper to apply directly to the scalp, focusing on areas of concern. Gently massage with fingertips to ensure even distribution and absorption.
For the best results, use daily for a minimum of three months. The ingredients within the serum have different mechanisms of action and act on different parts of the hair growth cycle. Therefore, optimal results will be seen after a full hair growth cycle (120 days) to capture all benefits.
How do I know if I’m using the pipette correctly?
First, ensure that the cap is tightly screwed on. This will prime the pipette when it is being unscrewed and draw the necessary amount. The pipette should only fill to the correct dose and this is intentional because it is the amount you need to fill each of the four corners of your scalp.
Watch our quick How to Apply video for the best results!
How long should the serum be left in for before washing?
The serum is a non-rinse formula however should you choose to wash your hair after applying then leave on for a minimum of 4 hours before to allow active ingredients to do their job.
Does the serum contain castor oil?
The serum contains a negligible amount of castor oil to emulsify part of the peptide complex. This amount is exceptionally small as can be seen by how lightweight and thin and the serum is. This very small amount does not leave the scalp greasy and will not exacerbate dandruff
Is the formula safe for seborrhoeic dermatitis?
There are a number of anti-inflammatory and exfoliating ingredients within the formula that can be beneficial for the flaking and inflammation seen with seborrhoeic dermatitis. The formula does not contain any anti-fungals but can be used safely alongside a scalp routine for seborrhoeic dermatitis.