The Hyaluronic Acid 3 Serum

All hair and skin types.

Almost always the first ingredient listed in water-based products.

Those looking for hydrated, smoother-feeling hair or lighter-feeling formulations.

It is commonly used to help ingredients dissolve and to give formulas a soft, glide-on texture. It appears in many leave-in and rinse-off products due to its versatility.

Those wanting lightweight hydration without heaviness.

It is often used as a gentle alternative to glycol-based humectants and can also help improve product texture and absorption.

Dry or dehydrated hair, and many curl and moisture routines.

A very common, well-tolerated humectant used across countless products.

Those with dry, dehydrated or coarse hair seeking added softness and moisture retention.

It is the salt form of hyaluronic acid and is widely used because it can hold many times its weight in water. In haircare, it helps support smoother, more manageable strands without adding heaviness.

Those seeking lightweight hydration without heaviness.

It also supports product texture and can enhance the performance of other ingredients in a formula.

Those interested in lightweight, non-greasy formulas that spread easily.

It is also used as a preservative booster to support formula stability.

Those who prefer products with a creamy, non-runny texture or improved spreadability.

It helps formulas stay uniform and enhances the feel of gels, creams and leave‑ins. It is widely used because it creates stable textures without heaviness.

Those looking for softer, smoother-feeling hair or gentle hydration.

Betaine is a naturally occurring molecule often used to improve hair feel and support moisture retention. It can also help enhance the overall mildness of cleansing formulas.

People who prefer products with a richer or more gel-like texture.

It is a polysaccharide widely used in cosmetics to keep formulas uniform and easy to apply. It works well alongside many other common ingredients.

Frizz-prone, coarse or dry hair wanting a smooth, glossy finish.

Some people prefer silicone-free formulas, especially for certain curl routines. It is widely used and helpful in many smoothing products.

People who prefer products with a silky, non-greasy feel or stable gel-like textures.

It is often used to create lightweight gels and serums that spread easily without stickiness. It also helps maintain product consistency over time.

Those looking to improve hair hydration, softness, or manageability.

It is a component of the skin and scalp’s natural moisturising factors and is well tolerated in most formulations.

Those seeking added hydration, improved manageability, or support for dry scalp.

It is a salt of lactic acid often used to enhance moisture retention and support a balanced formula. It can also contribute mild pH-buffering benefits depending on the product.

Those with dry or dehydrated hair seeking improved softness and manageability.

PCA is related to naturally occurring moisturising factors found in skin and hair. It is often used alongside other humectants for balanced hydration.

People looking for products that enhance softness and manageability.

It is a hydrogenated form of lecithin that can improve texture and support the delivery of other ingredients. Commonly used in both skincare and haircare for its smoothing feel.

Those interested in gentle preservation systems or sensitive scalps may find it relevant.

It is often paired with other preservatives to improve their effectiveness while allowing for lower usage levels. It also has light moisturising and conditioning properties.

Those seeking lightweight hydration or formulas that help smooth and soften hair.

Amino acids like serine are often included in conditioning or strengthening blends to complement other hair-hydrating ingredients. They can be used in many types of haircare from shampoos to treatments.

People looking for gentle conditioning ingredients or formulas designed to support softness without heaviness.

Amino acids like alanine are often included in haircare to complement protein or moisture-focused formulas. They can contribute to a smooth, hydrated feel.

Those looking to improve hair manageability or support moisture balance.

Glycine is often included as part of amino acid blends used to condition and reinforce the hair fibre. It can also appear in gentle cleansing systems and care-focused formulations.

People who want formulas that perform consistently in hard-water environments.

It is a plant-derived option often used as a gentler alternative to traditional chelators. It can also support the effectiveness of preservatives and surfactants.

Those interested in products with a consistent, creamy texture.

It is commonly used to improve product stability and spreadability in both haircare and skincare. It can also support the even distribution of other ingredients through the hair.

People looking for formulas that help smooth and soften hair without heaviness.

Amino acids like glutamic acid can support the hair’s natural structure and improve the feel of conditioners and treatments. They are commonly used in both rinse-off and leave-in products.

Most hair types as part of a balanced formula.

Usually present in small amounts to balance the formula.

Those looking for formulas that help maintain hair resilience or support overall conditioning.

Amino acids like lysine are often included in haircare to complement protein-based or strengthening formulations. They can contribute to a smoother, more conditioned feel.

Those looking for formulas that help maintain softness and support the hair’s protein structure.

Amino acids are often included in haircare to help improve the feel and manageability of the hair fibre. They can complement other conditioning and strengthening ingredients in a formula.

Those looking for formulas that help with hair resilience or hydration.

Arginine is naturally present in the hair’s keratin structure and is commonly added to strengthening or repairing products. It is also used in some formulations to help support scalp comfort.

Those looking for formulas that help improve hair manageability or support lightly replenishing treatments.

Amino acids like proline are often included in small amounts to complement conditioning systems and support the hair’s natural protein structure.

Those with dry, damaged or chemically treated hair seeking smoother, more resilient strands.

Ceramides are lipids naturally present in hair and are often added to formulations to help improve feel and manageability. They can complement conditioning agents by supporting the hair’s surface structure.

Those with dry, damaged, chemically treated or highly textured hair may appreciate its softening and replenishing effect.

Cholesterol is a naturally occurring lipid that can enhance flexibility and reduce dryness in hair formulations. It is often used alongside other conditioning agents to support overall hair manageability.

Those wanting conditioning benefits that do not weigh hair down, including fine or easily-greasy hair types.

It is commonly derived from coconut oil and glycerin and is valued for its silky, non-greasy feel. It is widely used in both skincare and haircare for its gentle, versatile performance.

People looking to soothe or balance the scalp, or support barrier-focused formulations.

It is often included in products designed to calm the scalp and reinforce its natural defences. It pairs well with gentle cleansers and conditioning systems.

Those who prefer richer, creamier textures in conditioners and styling products.

It is commonly used to give products structure and improve spreadability. It can be derived from plant or animal sources, with most haircare brands typically using plant-based forms.

Those looking for nourishment or softness, particularly for dry or coarse hair types.

It is naturally found in many plant oils and is commonly used to support hair softness and flexibility.

Those using sprays or styling products that benefit from fast evaporation.

In haircare, this typically refers to ethanol or denatured alcohol, which helps formulas feel lighter and dry faster. Its effect depends on the overall product balance and supporting conditioning ingredients.

Those wanting added nourishment or antioxidant support in their haircare routine.

Tocopherol is commonly included to help protect oils in a formula from oxidising and to offer light conditioning benefits. It is widely used in both skincare and haircare products.

Those looking for formulas that help smooth the cuticle or gently refine the scalp surface.

Lactic Acid can also provide mild hydrating and smoothing benefits in haircare. Its pH-balancing role helps support product stability and performance.

Those looking for added hydration or smoother-feeling hair.

It is also commonly used as a preservative booster to help maintain formula freshness. It is well tolerated in most haircare products.