Finishing Serum Haute Performance
Benefits
The Finishing Serum Haute Performance by Iles Formula is a weightless, heat-activated finishing treatment designed to smooth, strengthen and protect the hair while enhancing shine and manageability. It works across all hair types to refine the cuticle, control frizz and improve the look and feel of the hair without heaviness, making it ideal for both fine and coarse textures.
A blend of lightweight botanical oils, including Marula, Argan, Macadamia and Pracaxi, replenishes essential lipids, seals the cuticle and boosts softness and luminosity while helping hair resist moisture loss and environmental stress.
Tucumã Seed Butter further supports elasticity and smoothness, improving flexibility so hair feels stronger and more resilient rather than coated. Panthenol, Yacón Root Juice, and conditioning polymers bind moisture within the hair fiber and enhance slip, reducing friction and breakage during styling.
Hydrolyzed silk and keratin amino acids reinforce weakened areas and refine the hair surface, while antioxidant vitamin E helps protect against oxidative damage.
The result is hair that appears sleeker, glossier and organically fuller, with lasting smoothness, frizz control and heat-activated performance.
The Finishing Serum Haute Performance by Iles Formula is a weightless, heat-activated finishing treatment designed to smooth, strengthen and protect the hair while enhancing shine and manageability. It works across all hair types to refine the cuticle, control frizz and improve the look and feel of the hair without heaviness, making it ideal for both fine and coarse textures.
A blend of lightweight botanical oils, including Marula, Argan, Macadamia and Pracaxi, replenishes essential lipids, seals the cuticle and boosts softness and luminosity while helping hair resist moisture loss and environmental stress.
Tucumã Seed Butter further supports elasticity and smoothness, improving flexibility so hair feels stronger and more resilient rather than coated. Panthenol, Yacón Root Juice, and conditioning polymers bind moisture within the hair fiber and enhance slip, reducing friction and breakage during styling.
Hydrolyzed silk and keratin amino acids reinforce weakened areas and refine the hair surface, while antioxidant vitamin E helps protect against oxidative damage.
The result is hair that appears sleeker, glossier and organically fuller, with lasting smoothness, frizz control and heat-activated performance.
Read less200 ml
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GET THE SET
Shampoo Haute Performance + Conditioner Haute Performance + Finishing Serum Haute Performance
Is this for you?
For you if
- Damaged Hair
- Dry Hair
- Frizzy Hair
- Antioxidant Support
- Dull Hair
- Dry Hair
Suitable for
- Dry Hair
- Normal Hair
Not for you if
- Oily Scalp
- Hair Extensions
How to apply
Core Routine
- Hair Treatment
- Shampoo
- Conditioner
- Scalp Treatment
- SPF
Period after opening
Ingredients
Pracaxi Seed OilHair Strengthening · Conditioning · Anti-Frizz
Pracaxi Seed Oil is a nutrient-rich plant oil extracted from the seeds of the Amazonian Pracaxi tree, and is valued for its exceptional smoothing, strengthening and shine-enhancing properties. It is naturally high in behenic, oleic and linoleic fatty acids, which allow the oil to spread easily over the hair surface and penetrate the cuticle to replenish lost lipids. By restoring this lipid layer, Pracaxi seed oil helps seal the cuticle, reduce moisture loss and improve elasticity, making hair softer, more flexible and less prone to breakage. Its lightweight yet deeply conditioning nature also helps tame frizz, improve manageability and add gloss without leaving hair greasy, making it particularly effective for dry, damaged, textured or chemically treated hair.Marula Oil Conditioning · Anti-Frizz · Antioxidant Protection
Marula Oil is a lightweight, nutrient-rich oil and is prized for its exceptional smoothing, softening and protective properties. Naturally high in oleic acid and antioxidants, it penetrates the hair fiber easily, helping to replenish lost lipids, improve elasticity and restore softness without weighing hair down. By reinforcing the hair’s lipid barrier, it helps seal the cuticle, reduce moisture loss and smooth rough, frizz-prone strands, which enhances shine and manageability. Its antioxidant content also helps protect hair from environmental stress and oxidative damage, making it especially beneficial for dry, damaged, colour-treated, or heat-stressed hair.Argan OilConditioning · Anti-Frizz · Antioxidant Protection
Argan oil is a nourishing plant oil which is widely used for its ability to soften, strengthen and enhance shine. Rich in oleic and linoleic fatty acids, as well as vitamin E, it works by replenishing the hair’s natural lipid layer, which helps seal the cuticle, reduce moisture loss and smooth rough, damaged strands. This cuticle-smoothing action improves softness, manageability, and frizz control while enhancing natural gloss. At the same time, its antioxidant content helps protect the hair fiber from oxidative and environmental stress caused by UV exposure, pollution and heat styling, making argan oil especially effective for dry, brittle, color-treated or chemically processed hair.Macadamia Seed OilHair Strengthening · Conditioning · Anti-Frizz
Macadamia Seed Oil is a lightweight, nutrient-rich plant oil, valued for its ability to deeply nourish, smooth and strengthen the hair without heaviness. It is naturally high in oleic and palmitoleic fatty acids, which closely resemble the lipids found in human sebum, allowing it to penetrate the hair fiber efficiently and replenish lost moisture. By restoring the hair’s lipid barrier, macadamia seed oil helps seal the cuticle, reduce moisture loss and improve elasticity, making hair softer, more flexible, and less prone to breakage. This cuticle-smoothing action also enhances shine, reduces frizz and improves overall manageability, making it especially beneficial for dry, damaged, coarse or chemically treated hair.Tucumã Seed ButterConditioning · Anti-Frizz
Tucumã Seed Butter is a richly nourishing plant butter extracted from the seeds of the Tucumã palm, native to the Amazon rainforest, and is prized for its ability to restore softness, strength and elasticity to dry or damaged hair. Naturally high in fatty acids such as lauric, oleic and linoleic acids, it works by replenishing the hair’s depleted lipid layer, which helps seal the cuticle, reduce moisture loss, and improve smoothness and shine. Its unique lipid profile allows it to soften and condition the hair fiber without excessive heaviness, improving flexibility so hair bends rather than breaks. By smoothing rough cuticles and reducing friction, it helps tame frizz, enhance manageability and protect hair from ongoing mechanical and environmental stress, making it especially beneficial for dry, brittle, textured or chemically treated hair.Panthenol (Pro-Vitamin B5)Hair Strengthening · Anti-Frizz · Hydrating
Panthenol, also known as pro-vitamin B5, is a stable form of Pantothenic Acid which penetrates the hair fiber and converts into vitamin B5 once applied. It acts as a humectant, attracting and binding moisture to the hair, which helps prevent dryness and brittleness while improving softness and elasticity. Inside the hair shaft, panthenol increases water content, giving hair a fuller, thicker feel and improving flexibility so strands are less likely to snap under stress. At the same time, it forms a lightweight, breathable film on the surface of the hair that smooths the cuticle, enhances shine and slip, reduces friction during washing and brushing, and helps protect against mechanical damage. On the scalp, it supports hydration and barrier function, contributing to overall hair health, making panthenol especially effective for reducing breakage and improving the look and feel of dry, damaged or chemically treated hair.Yacon Root JuiceHair Strengthening · Conditioning
Yacón Root Juice is a plant-derived extract and is used for its powerful humectant and conditioning properties. Naturally rich in fructooligosaccharides and sugars, it attracts and binds water to the hair and scalp, helping to maintain hydration and prevent dryness. By increasing moisture content within the hair fiber, Yacón root juice improves softness, flexibility and elasticity, which reduces brittleness and breakage. It also helps smooth the cuticle and enhance manageability, while supporting scalp comfort by maintaining hydration, making it especially beneficial for dry, fragile or stressed hair.Keratin Amino AcidsHair Strengthening · Promoting Shine
Keratin Amino Acids are low–molecular weight components derived from keratin, the primary structural protein of hair, and are used to help strengthen, repair and protect weakened strands. Because they are small and water-soluble, these amino acids can penetrate into damaged areas of the hair fiber, where they help support and reinforce the hair’s natural protein structure. By filling in micro-gaps and improving internal cohesion, keratin amino acids increase elasticity and tensile strength, making hair more resilient and less prone to breakage. At the same time, they help smooth the cuticle surface, improving softness, shine and manageability, while supporting hair’s ability to retain moisture and withstand mechanical and heat-related stress.Silk ExtractHair Strengthening · Anti-Frizz · Promoting Shine
Silk Extract is a protein that coats the hair shaft, enhancing smoothness and shine, whilst protecting against environmental stressors. It strengthens and conditions hair fibres, reducing breakage, resulting in softer, more manageable hair.PolyquaterniumHair Strengthening · Anti-Frizz
Polyquaternium is a lightweight, water-soluble conditioning polymer used in haircare to improve softness, manageability and frizz control without weighing hair down. It works by carrying a positive charge, which allows it to selectively bind to the negatively charged areas of the hair, especially damaged or porous sections, where it forms a thin, flexible conditioning film. This film smooths the hair cuticle, increases slip, reduces tangling and minimises friction during washing and brushing, helping to prevent breakage. Because it rinses cleanly and does not build up heavily, Polyquaternium leaves hair feeling soft, silky and conditioned while still light, making it suitable for fine, colour-treated and damaged hair types.
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Smell & Texture
Delivery & Returns
ROYAL MAIL TRACKED 48:
£5.00 (free for members on orders over £75)
Delivered within 2-3 working days.
NEXT WORKING DAY DELIVERY:
£8.00 (free for members on orders over £150)
Delivered the next working day if ordered before 1pm.
SATURDAY UK DELIVERY:
£18.00
Delivered on Saturday when ordered before 1pm on Friday.
*(For NI, Channel Islands & Scotland - due to the courier service in place, we cannot guarantee next day delivery to these areas, however we expect you will receive your delivery within 2-5 days).
RETURNS
Items returned by post can take up to 14 working days to process. Credit notes can be applied to your account within 5 working days. For refunds, we will reimburse you using your original payment method which can take up to 14 days.
The Benefits
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Hair Strengthening
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Conditioning
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Anti-Frizz
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Antioxidant Protection
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Promoting Shine
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Hydrating
Hair Strengthening
Conditioning
Anti-Frizz
Antioxidant Protection
Promoting Shine
Hydrating
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Hair Strengthening
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+
Conditioning
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+
Anti-Frizz
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+
Antioxidant Protection
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Promoting Shine
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Hydrating
Spotlight
Damaged Hair
Frequently Asked Questions
Why I love it
X Natalie K-F
Founder, Embassy of Beauty






