Let's Grow Serum 50ml
Bottle of Mark Hill The Hair Lab growth serum with rosemary leaves on a pink background
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Bottle of Mark Hill The Hair Lab growth serum with rosemary leaves on a pink background
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml
Let's Grow Serum 50ml

Let's Grow Serum 50ml

£9.99
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THE ONE EVERYONE IS TALKING ABOUT - ROSEMARY GROWTH SERUM  

ENHANCES THE LOOK AND FEEL OF HAIR THICKNESS AND DENSITY.

The low down: Our bioactive Rosemary oil is a natural, stimulant to help scalp circulation and support healthy-looking hair growth, this formula is also enriched with caffeine oil to nourish, hydrate and strengthen from root to tip.

Marks top tip: Apply it straight onto the scalp, damp or dry, it’s up to you and really massage it in for a good minute. That extra bit of stimulation helps boost circulation, and trust me, consistency is what delivers stronger, fuller-looking results. 

Quantity

Who’s it for: Suitable for all hair types — especially damaged hair prone to breakage and split ends.

Why you’ll love it: This nourishing serum targets dry, brittle strands while absorbing into the scalp to deliver energising ingredients that help boost circulation and improve the look of hair density over time.

The star of the show: A powerful pairing of caffeine and rosemary oil works to energise the scalp, enhance circulation and promote stronger, fuller-looking hair from root to tip.

Scent sensation: A luminous amber fragrance blending saffron and jasmine with rich amberwood and cedar.

Apply to your scalp directly from the dropper in 1" inch sections. Massage and distribute with fingertips. Do not rinse. Comb through and style. For best results use daily on wet or dry hair.

Water (Aqua), Butylene Glycol, Polysorbate 20, Propanediol, Heptyl Glucoside, Benzyl Alcohol, Polyacrylate Crosspolymer-6, Panthenol, Potassium Sorbate, Caffeine, Fragrance (Parfum), Hydroxyacetophenone, Allantoin, Xanthan Gum, Salicylic Acid, Glycerin, Phenoxyethanol, Sodium Benzoate, Pisum Sativum (Pea) Sprout Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Lactic Acid, Citric Acid, Sodium Hydroxide, Hexamethylindanopyran, Tetramethyl Acetyloctahydronaphthalenes.

Free UK Mainland over £50.00

Economy (3-5 business days): £3.98

Evri Pick up point (3-5 business days): £3.99

Premium (1-2 business days): £6.99 (order must be placed before 2pm, excludes Fri, Sat & Sun)

Non UK Mainland : £20.00

For more information click here.

See our Returns Policy here.
Let's Grow Serum 50ml

Let's Grow Serum 50ml

£9.99
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Let's Grow Serum 50ml

Why Let's Grow?

Give your hair the care it needs to look and feel stronger, healthier and ready to grow. Let’s Grow is all about creating the perfect routine for your healthiest-looking lengths.



Care starts at the root. Nourishing formulas help care for your scalp and lengths, leaving hair feeling conditioned, cared for and beautifully soft.

From wash day to everyday care, Let’s Grow makes it easy to build a consistent routine designed around stronger, healthier-looking hair.


Frequently Asked Questions

  • It helps nourish the scalp and support stronger, fuller-looking hair over time.

  • Both. It can be applied to damp or dry hair.

  • No. Leave it in.

  • No. The lightweight formula absorbs quickly.

  • Healthy hair growth takes time, so consistency is key. Daily use alongside the full Let's Grow range delivers the best results.

  • All our products are subject to quality control.

    Our warranty provides a guarantee against manufacturer defects.

    The guarantee covers any manufacturing, design, or material defect. Please notify us within 2 months of noticing any defects.

    It does not cover blows, improper use, or other issues that are not attributable to a manufacturer defects.

  • Yes, we offer full and partial refunds.

    Please enquire for more information about our Refund policy.

  • We use all major carriers, and local courier partners. Use the shipping estimator in the cart to check your shipping rates.

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Free from Sulphates, Parabens & Silicones

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Cruelty-Free – Never Tested on Animals

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100% Vegan-Friendly

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Premium Ingredients & Fragrance

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Our story

The Mark Hill Brand

We create salon-inspired haircare and styling tools designed to fit into real life. From effortless everyday waves to full glam moments, sleek styles to big volume energy — we make professional-looking hair feel easy, achievable and fun.

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