Thalgo Cold Marine 24H Hydrating Body Milk

All hair and skin types.

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

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

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

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 for light, non-greasy moisture or those wanting plant-based conditioning ingredients.

It is commonly used for its smooth feel and ease of absorption without weighing hair down. It can also help support shine and manageability in many hair types.

People looking for smoother, softer-feeling hair or richer, creamier product textures.

Fatty alcohols are commonly used to enhance slip and improve the feel of conditioners and treatments. They also support the structure of emulsions, helping products stay stable.

Useful for dry, dehydrated or frizz-prone hair needing added hydration.

It provides a smooth, conditioned feel without heaviness and is often used to enhance moisture balance in both hair and skin products.

Those seeking added softness, shine, or help with dry or coarse hair.

It is commonly used in haircare for its smooth, silky feel and its ability to support moisture retention. It is generally well tolerated by most hair types.

Those seeking added smoothness, shine or scalp comfort.

Sesame seed oil is rich in fatty acids that support softness and manageability in many hair types. It is often used in treatments, masks and leave-ins for its lightweight conditioning feel.

Those interested in products featuring mineral-rich or marine-inspired formulations.

Maris Aqua functions similarly to purified water but may contain trace minerals depending on the source. It mainly serves as a vehicle for other ingredients in a formula.

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.

Those who prefer formulas that feel lightweight and spread easily.

It is commonly used as an emulsifier to stabilise creams and conditioners without adding heaviness. Its mild surfactant properties can also support product texture and rinseability.

Those seeking lightweight natural oils for moisture, shine or scalp comfort.

It is rich in fatty acids that support hair softness without feeling overly heavy. Often used as a carrier oil in both rinse-off and leave-in formulas.

Those looking to add softness, shine or protection to dry or coarse hair.

It is rich in fatty acids that help reduce moisture loss and improve manageability. Often used in both leave-in and rinse-off formulas for added nourishment.

People looking to support hair strength, smoothness or manageability, especially in damaged or colour-treated hair.

Hydrolysed proteins are broken into smaller fragments so they can more easily interact with the hair surface. They are commonly used to enhance feel and resilience without weighing the hair down.

Those looking for lightweight moisture or added softness without heaviness.

This extract is valued for its natural polysaccharides, which can provide a flexible film on the hair for light conditioning. It is commonly used in both hair and skin formulations.

Those seeking gentle hydration or added softness from plant-derived extracts.

Algae extracts vary by species, but they commonly supply moisturising polysaccharides and minerals that support a smooth feel.

People wanting a light, non-greasy smoothing or shine finish.

Often used in serums and oils for a weightless feel. Some prefer silicone-free options depending on routine.

Those who prefer products with a more structured or gel-like feel.

This polymer also aids in forming a light film on the hair, which can support styling and product performance. It is widely used for its reliability in many cosmetic formats.

Those looking for mild cleansing or products suitable for regular use.

Alkyl glucosides are often used to boost foam and improve the feel of cleansing formulas. They are known for being gentle compared with many traditional surfactants.

Those looking for smooth, conditioned feel without the weight of traditional oils.

It is often used as a non-greasy alternative to plant oils and helps reduce frizz by smoothing the hair surface. It also supports product spreadability and a silky finish.

Those looking to improve hydration and softness in dry or textured hair.

Glucose is a simple sugar used in haircare to support moisture balance and enhance product feel. It is commonly combined with other conditioning ingredients for improved results.

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.

All products that need protecting from spoilage.

A very common, well-studied preservative used at low levels.

Those wanting smoother, easier‑to‑detangle hair or lightweight shine.

It evaporates after application, making it useful for delivering spreadability without long‑term buildup. Commonly paired with other conditioning agents in styling and treatment formulas.

Those looking for conditioning, slip, or richer textures in their haircare products.

Despite the name, fatty alcohols like cetyl alcohol are non‑drying and are commonly used to add emollience and stability to formulations.

People who enjoy a scented product.

Fragrance preference is personal. Some people prefer fragrance-free formulas by choice.

Those with dry, coarse or dehydrated hair, or a dry, flaky scalp.

It is often used to support hydration and maintain a comfortable scalp environment. In some formulas it can also help improve product absorption.

Those looking for products with reliable preservation, especially in creams, lotions or styling formulas.

It is commonly used in cosmetics at low levels to help maintain product quality over time. It works alongside other preservatives to support formula stability.

Those with a sensitive or easily irritated scalp may appreciate its calming effect.

It is widely used in personal care for its comforting feel and compatibility with many formulas. In haircare, it supports a smoother, more comfortable scalp experience.

Those looking for softer-feeling hair or products that support moisture balance.

Phospholipids are naturally occurring lipid molecules that can help improve the feel and manageability of hair. They may also assist with the spreadability and overall performance of a formula.

Those who prefer silicone‑free or lightweight formulations that still feel smooth and conditioned.

It is often used in gentle, skin‑ and scalp‑friendly formulas because it helps maintain product stability without adding heaviness. Its structure also provides a light conditioning effect in some haircare products.

Those wanting added moisture, smoothness or frizz control.

It is created by hydrogenating plant-derived oils to give them a more stable, solid texture. This stability makes it useful in balms, creams and rich conditioning formulas.

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.

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.

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.

Those seeking gentle hydration or lightweight moisture support.

It is part of the polyhydroxy acid (PHA) family and is known for being mild and suitable for many hair types. It can also support product stability and texture.

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.

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.

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 interested in formulas that help maintain hair structure or improve manageability.

Amino acids are often included in haircare to complement the hair’s natural protein makeup. They can help enhance softness without weighing the hair down.

Those interested in how product pH affects scalp comfort or hair cuticle behaviour.

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.

All products that need a preservative system.

Often paired with other preservatives for broad protection.

People who prefer a lighter silicone feel or want improved spreadability without heaviness.

It evaporates after application, leaving minimal residue on the hair. It is commonly used to help distribute other conditioning ingredients more evenly.

Anyone who uses water-based products that benefit from reliable preservation.

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.

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 seeking gentle hydration or products designed to leave hair feeling softer and more manageable.

It is a mild ingredient often used to support conditioning or hydrating formulas. It can also contribute to overall product stability.