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Philip Kingsley Density Thickening Protein Spray is an advanced styling spray designed to improve the thickness, strength, and shine of fine or thinning hair. It provides visible results from the first use, creating fuller and denser-looking hair while also offering heat protection.
Key Benefits:
Instant Volume & Thickness: Features Hyper-Branched Polymers and Hydrolyzed Pea Peptides to boost volume and add texture.
Strengthens Hair: Reduces breakage and minimizes hair fall for healthier-looking strands.
Heat Protection: Shields hair from heat damage up to 230°C, making it ideal for use with styling tools.
Enhances Shine: Leaves hair with a glossy, vibrant finish.
Lightweight Formula: Suitable for fine hair without weighing it down.
With this spray, you can confidently style your hair while improving its overall health and appearance.
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Directions
How To Use Philip Kingsley Density Thickening Protein Spray
Shake well before use.
Spray through mid-lengths and ends of cleansed, damp hair.
Comb through to detangle.
Blow-dry or style as usual.
Ingredients
Philip Kingsley Density Thickening Protein Spray Ingredients
The water base that carries and dissolves the other ingredients in most products.
May suit
All hair and skin types.
Worth knowing
Almost always the first ingredient listed in water-based products.
Polysorbate 20Thickeners and stabilisers
Solubiliser / emulsifier
Helps blend oil‑based ingredients into water‑based formulas for a smooth, even texture.
May suit
Those using products with essential oils or fragranced blends, as it helps disperse these evenly.
Worth knowing
It is widely used as a gentle solubiliser in both leave‑in and rinse‑off products. Its presence can improve product consistency and prevent ingredient separation.
Pisum Sativum PeptideProteins and amino acids
Plant-derived peptide
A plant-derived peptide used to help support hair strength and improve the feel of damaged strands.
May suit
Those looking to enhance hair resilience, smoothness or support the look of chemically treated or weakened hair.
Worth knowing
Pea peptides are commonly included in modern haircare to offer lightweight conditioning and a soft, fortified feel. They are valued for providing some of the benefits of proteins without heavy buildup.
A yeast-derived ferment used to help condition and support the scalp and hair.
May suit
People looking for gentle scalp-supporting or conditioning ingredients.
Worth knowing
Fermented extracts are commonly used in haircare for their lightweight conditioning and soothing properties. They can complement other nourishing ingredients in both scalp and hair treatments.
Silicone Quaternium-16Silicones
Conditioning silicone
A silicone-based conditioning agent that helps smooth and soften the hair.
May suit
Those looking for added slip, reduced frizz, or easier detangling.
Worth knowing
It forms a lightweight conditioning layer that enhances shine without heavy build-up for most hair types. It is commonly used in both rinse-off and leave-in formulas.
Sodium BenzoatePreservatives
Preservative
Helps protect water-based products from spoilage so they stay usable.
May suit
All products that need a preservative system.
Worth knowing
Often paired with other preservatives for broad protection.
ParfumFragrance ingredients
Fragrance
Gives the product its scent.
May suit
People who enjoy a scented product.
Worth knowing
Fragrance preference is personal. Some people prefer fragrance-free formulas by choice.
Undeceth-11Cleansers / surfactants
Solubiliser / surfactant
A nonionic surfactant that helps blend oil‑based and water‑based ingredients.
May suit
Useful for those using products that need clear, stable blends such as serums, sprays or lightweight conditioners.
Worth knowing
It is commonly used in haircare as a mild solubiliser to evenly disperse fragrance or lightweight oils. Its gentle action makes it suitable for leave‑in and rinse‑off formulas.
Potassium SorbatePreservatives
Preservative
Helps keep haircare formulas stable by preventing the growth of microbes.
May suit
Anyone who uses water-based products that benefit from reliable preservation.
Worth knowing
It is commonly used alongside other preservation systems to maintain product freshness and extend shelf life. It is generally well tolerated in rinse-off and leave-in products.
A cationic guar-derived polymer that conditions, softens and helps reduce static in the hair.
May suit
People looking for smoother, easier-to-detangle hair, including those with dry, damaged or textured hair.
Worth knowing
It is commonly used in shampoos and conditioners to improve slip and manageability without adding heaviness. Its cationic nature helps it adhere lightly to the hair surface for a conditioning effect.
PanthenolConditioning agents
Conditioning agent
Helps condition, soften and add a smooth, healthy feel to the hair.
May suit
Most hair types, especially dry or dull hair.
Worth knowing
A versatile, well-tolerated conditioning ingredient.
Polyimide-1Thickeners and stabilisers
Styling polymer
A film-forming polymer that helps provide hold, shape and texture in hair styling products.
May suit
Those looking for longer-lasting hold or enhanced definition in styling formulas.
Worth knowing
It forms a lightweight film on the hair to support style retention without adding noticeable weight. Commonly used in gels, mousses and sprays for flexible control.
Cetyl AlcoholConditioning agents
Emollient and texture enhancer
Cetyl Alcohol helps soften the hair and gives products a smooth, creamy texture.
May suit
Those looking for conditioning, slip, or richer textures in their haircare products.
Worth knowing
Despite the name, fatty alcohols like cetyl alcohol are non‑drying and are commonly used to add emollience and stability to formulations.
Disodium EDTAChelating agents
Chelating agent
Binds to minerals from hard water so the product works consistently and stays stable.
May suit
All products, especially in hard-water areas.
Worth knowing
Used in tiny amounts to keep formulas performing reliably.
ButyloctanolConditioning agents
Emollient and texture enhancer
A lightweight emollient that helps smooth the hair and improve product texture.
May suit
People looking for smoother-feeling hair or products with a silky, non-greasy finish.
Worth knowing
It is often used to enhance slip and spreadability in formulations. It can also support a softer, conditioned feel without heaviness.
Undeceth-5Cleansers / surfactants
Non-ionic surfactant / solubiliser
A non-ionic surfactant that helps cleanse and solubilise oily ingredients in haircare formulas.
May suit
Those looking for gentle, low-foaming cleansing or products that blend oils into water-based formulas.
Worth knowing
It is commonly used to help create stable, uniform formulations and to boost the spreadability of products. Non-ionic surfactants like this are typically mild compared to stronger cleansing agents.
A fermented radish root filtrate used to help keep formulations fresh and stable.
May suit
Those interested in products that use fermentation-derived preservation systems.
Worth knowing
It provides mild antimicrobial activity and is commonly used in modern, gentle preservation blends. Its use does not change how the product performs on the hair.
Quaternium-91Conditioning agents
Conditioning agent
A conditioning compound that helps smooth, soften and detangle hair.
May suit
People looking for improved manageability, reduced frizz and a smoother feel in their hair.
Worth knowing
It is often used alongside other conditioning esters to enhance slip and reduce static. It is common in rinse-off conditioners and masks designed for dry or textured hair.
Cetearyl AlcoholConditioning agents
Fatty alcohol conditioner
A fatty alcohol that helps soften hair and improve the texture of formulations.
May suit
People looking for smoother, more manageable hair or richer, creamier product textures.
Worth knowing
Despite the name, fatty alcohols are moisturising and conditioning rather than drying. They also help stabilise and thicken many haircare formulas.
Cetrimonium MethosulfateConditioning agents
Hair conditioning agent
Helps soften, smooth and detangle hair by reducing static and improving manageability.
May suit
People looking for smoother, easier-to-comb hair or reduced frizz.
Worth knowing
Despite its name, it is not a sulphate surfactant but a quaternary conditioning ingredient commonly used in creams and conditioners. It is valued for providing a light, non-greasy conditioning feel.
Behentrimonium MethosulfateConditioning agents
Conditioning agent
A cationic conditioning ingredient that helps soften and detangle hair.
May suit
People looking for smoother, easier-to-comb hair, especially in conditioners and leave-in products.
Worth knowing
Despite the name, it is not a strong sulphate cleanser but a gentle, oil-loving conditioning compound derived from fatty alcohols.
A quaternary conditioning ingredient that helps smooth and soften the hair.
May suit
Those looking for improved slip, reduced static and easier detangling.
Worth knowing
It is commonly used in conditioners to enhance manageability and provide a silky feel. As a large conditioning molecule, it remains mostly on the hair’s surface to support smoothness.
PhenoxyethanolPreservatives
Preservative
Helps keep the product stable and pleasant to use after opening.
May suit
All products that need protecting from spoilage.
Worth knowing
A very common, well-studied preservative used at low levels.
LimoneneFragrance ingredients
Fragrance component
A fragrance component that also occurs naturally in many citrus and plant oils.
Worth knowing
A fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.
Sodium HydroxidepH adjusters
pH adjuster
Helps control and stabilise the pH of haircare formulations.
May suit
Those interested in how product pH affects scalp comfort or hair cuticle behaviour.
Worth knowing
It is used in very small amounts to bring a formula to the desired pH range. Once adjusted, it does not act as a strong alkaline agent in the finished product.
LinaloolFragrance ingredients
Fragrance component
A fragrance component found naturally in many flowers and spices.
Worth knowing
A fragrance component that must be listed separately on labels because a minority of people can be sensitive to it. Its presence is normal, required disclosure and is not a quality signal.
Acetic AcidpH adjusters
pH adjuster
Helps regulate a product’s acidity for optimal hair and scalp performance.
May suit
People using products that rely on precise pH levels for smoothness or shine.
Worth knowing
Acetic acid is a simple organic acid also found in vinegar and is commonly used to keep formulas stable and effective. At low levels, it can help support cuticle lay-down, contributing to smoother-feeling hair.
Iodopropynyl ButylcarbamatePreservatives
Preservative
A preservative that helps keep formulations stable by reducing the growth of microbes.
May suit
Those who want products to remain fresh and effective over time.
Worth knowing
It is used in very small amounts to support product longevity and is common in both rinse-off and some leave-in formulas. Regulations guide its safe use levels in different product types.
Isopropyl AlcoholSolvents
Solvent
Helps dissolve ingredients and supports quick-drying formulas.
May suit
Those using styling products that benefit from fast evaporation, such as sprays.
Worth knowing
It is commonly used at low levels to improve texture and spreadability. It evaporates quickly, leaving minimal residue on the hair.