Product image 1, can be opened in a modal.
Skincare serum bottle labeled 'FUL' on a light gray background
Product image 2, can be opened in a modal.
Before and after comparison of hair with hydration treatment on a plain background
Product image 3, can be opened in a modal.
Ful skincare serum bottle with pink flowers and green leaves in the background
Product image 4, can be opened in a modal.
Woman with curly hair and instructions on applying hair product.
Product image 5, can be opened in a modal.
FUL Hyaluronic Acid Hair Serum with packaging on a white background
Product image 6, can be opened in a modal.
Ful Hydrate Hyaluronic Acid Hair Serum bottle with features labeled on a gray background
Product image 7, can be opened in a modal.
Hyaluronic acid hair serum with packaging on a light gray background

20 total reviews

Hyaluronic Acid Hair Serum

Regular price £33.00
Regular price £33.00 Sale price £33.00
Tax included. Shipping calculated at checkout.
  • – 2 day express delivery!
  • Inventory on the way

Your daily hydration hero in one lightweight bottle. FUL Hyaluronic Acid Hair Serum is the multi-tasking essential that delivers deep moisture, controls frizz, smooths flyaways, and supports scalp health—all without weighing hair down or leaving greasy residue. This isn't heavy oil that makes hair limp or sticky gel that creates buildup. It's intelligent hydration in its purest form: lightweight, fast-absorbing, and genuinely effective.

The 5-in-1 Multi-Tasking Power

1. Daily Hydration Treatment - Use every morning on damp hair after washing to flood strands with moisture that lasts all day. The Hyaluronic Acid holds up to 1000 times its weight in water, creating a reservoir of hydration within each strand. This isn't surface coating—it's genuine moisture retention.

2. Styling Support - Apply before blow-drying, straightening, or curling to create a protective moisture barrier, improve heat distribution for better styling results, reduce styling time as hydrated hair cooperates better, and enhance style longevity by maintaining moisture balance.

3. On-the-Go Frizz Control - Keep in your bag for frizz emergencies. When humidity strikes, flyaways appear, or hair feels dry mid-day, a pea-sized amount smooths everything instantly. No need to wet hair or redo styling—just smooth and go.

4. Scalp Treatment - Apply directly to scalp to soothe dry, flaky, or itchy conditions, improve scalp hydration and health, promote blood circulation through massage application, and create optimal environment for healthy hair growth. The lightweight formula absorbs into scalp without leaving greasy residue or weighing down roots.

5. Flyaway Tamer - Those annoying baby hairs that stick up? Smooth a tiny amount over them. The serum's light hold and moisture control keeps them in place without stiffness or greasiness. Perfect before photos, important meetings, or anytime you need polished perfection.

How to Use for Every Need

Wet Hair Styling (Morning Routine)

Step 1: After washing with your favorite FUL shampoo and conditioner, gently towel-dry hair to damp.

Step 2: Apply pea-sized amount to palm, rub hands together to distribute.

Step 3: Work through mid-lengths and ends, avoiding roots if hair is fine or oily-prone.

Step 4: Style as usual—blow-dry, air-dry, straighten, or curl.

The Result: Hair that's hydrated, protected, and cooperates beautifully with styling. Moisture locked in from the start means frizz stays controlled all day.

Dry Hair Touch-Ups (Throughout the Day)

Step 1: When frizz appears or hair feels dry, dispense pea-sized amount.

Step 2: Rub between palms to warm and distribute.

Step 3: Smooth over frizzy areas, focusing on mid-lengths and ends.

Step 4: Use remaining product on hands to smooth flyaways.

The Result: Instant frizz control and moisture boost without needing to wet hair or redo styling.

Scalp Treatment (As Needed)

Step 1: Part hair in sections to expose scalp.

Step 2: Apply small amount of serum directly to scalp, focusing on dry or flaky areas.

Step 3: Massage in gentle circular motions with fingertips for 1-2 minutes. This promotes absorption and blood circulation.

Step 4: Leave in—no rinsing needed. The lightweight formula absorbs completely.

The Result: Soothed, hydrated scalp without greasy roots or weighed-down hair.

Flyaway Spot Treatment (Quick Fix)

Step 1: Dispense tiny amount (smaller than pea-sized).

Step 2: Rub between palms until nearly absorbed.

Step 3: Smooth over flyaways and baby hairs with light hand.

The Result: Polished, sleek appearance without helmet-hair stiffness.

The Paradise Escape Fragrance

Every application transports you to tropical luxury with this captivating scent experience.

Opening: Rose & Lychee - Romantic rose meets exotic, juicy lychee in a fresh, uplifting combination that's sophisticated and feminine without being overpowering.

Base: Amber & Cedarwood - Warm, sensual amber and grounding cedarwood create depth and longevity. The fragrance lingers subtly in your hair throughout the day.

The overall effect is elegant, modern, and universally appealing—perfect for any setting from office to evening out.

Pair with

Skincare serum bottle labeled 'FUL' on a light gray background

Hyaluronic Acid Hair Serum

Regular price £33.00
Regular price £33.00 Sale price £33.00

Castor Oil

helps nourish and moisturize hair and scalp with deep-penetrating fatty acids, supports scalp health with anti-inflammatory properties, and adds natural shine without greasiness.

Betaine

helps moisturize hair and reduce frizz, protects against humidity-related frizz through moisture balance, and enhances the penetration of other beneficial ingredients.

Glycerin

helps nourish and condition hair, leaving it soft while attracting moisture from air and binding it to hair, and maintains optimal hydration in all climates.

Together, these five actives create comprehensive hydration that works on multiple levels—surface smoothing, deep moisture, scalp health, and environmental protection.

Who Needs This Serum

Colour-Treated Hair

Completely safe for coloured hair. In fact, the moisture helps maintain colour vibrancy by keeping cuticles sealed.

Busy Lifestyles

Keep in your bag for on-the-go frizz control. No water or tools needed—just smooth and go.

Dry or Flaky Scalp

The Hyaluronic Acid and Panthenol soothe irritation, reduce flaking, and create healthy scalp environment—all without greasy roots.

Flyaway Fighters

Those annoying wisps that stick up and ruin sleek styles? Smooth them down in seconds with this serum's light hold and moisture control.

Dry, Dehydrated Hair

Whether from environmental exposure, over-processing, or natural texture, dry hair needs daily moisture infusion. This serum delivers without weighing hair down.

Heat-Styled Hair

Daily blow-drying, straightening, or curling depletes moisture. The serum replenishes what heat removes while providing protection for next styling session.

Frizzy, Humidity-Prone Hair

The triple hydration complex maintains optimal moisture balance, preventing the dryness that causes frizz and the humidity absorption that makes it worse.

All Hair Types

Fine, thick, straight, wavy, curly, coily—the lightweight formula works universally. Fine hair gets hydration without heaviness. Thick hair gets frizz control without greasiness.

★★★★★
★★★★★
★★★★★
★★★★★