Semi Di Lino Diamond Illuminating Mask

All hair and skin types.

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

People looking for smoother, more manageable hair or richer, creamier product textures.

Despite the name, fatty alcohols are moisturising and conditioning rather than drying. They also help stabilise and thicken many haircare formulas.

Most hair types, especially tangle-prone or coarse hair.

A common conditioner ingredient despite the chloride name, which simply describes its chemistry.

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

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

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.

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 looking for improved manageability, detangling and smoother-feeling hair.

It is a commonly used quaternary ammonium compound that helps conditioners spread easily through the hair. It is effective even at low levels, which is why it appears frequently in rinse-off products.

Hair wanting a light conditioning boost.

A plant-derived extract whose effect depends on the amount used.

Those looking to add softness, shine or light nourishment without a heavy feel.

It is rich in fatty acids and can help smooth the hair cuticle. Often used in blends to support overall hair manageability.

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 who spend time outdoors or want to help maintain colour-treated hair.

It is widely used in suncare and some hair products to support protection against UV exposure. In haircare, it mainly helps reduce colour fade rather than providing full sunscreen performance.

Most hair types, especially dry or dull hair.

A versatile, well-tolerated conditioning ingredient.

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 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.

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.

People looking to improve hair strength, smoothness or resistance to breakage.

It forms a lightweight film on the hair to boost softness and resilience without heavy build-up. Often used in strengthening and smoothing formulas.

Damaged, frizz-prone or colour-treated hair wanting targeted smoothing.

Designed to deposit where hair needs it most. Some prefer silicone-free formulas by choice.

Those using products with oils or silicones who want them to rinse evenly without residue.

It is commonly used in shampoos and styling products to support stable, uniform textures. Its mild nature makes it suitable for a wide range of formulations.

Those looking for effective yet mild cleansing or improved product spreadability.

It is commonly used in shampoos and styling products to support gentle cleansing and stable formulations. Non-ionic surfactants like this are valued for being versatile in different formula types.

Those looking for products that spread evenly or contain stable blends of oils and water-based ingredients.

It is a versatile non-ionic surfactant often used at low levels to support product texture and stability. It can also assist with foaming and rinse-off performance.

Those using products that need light cleansing or stable blends of oils, silicones, or fragrances.

It is commonly used to solubilise fragrance or silicone ingredients in shampoos and treatments. Its mild, nonionic nature means it typically works well alongside other surfactants.

All products, especially in hard-water areas.

Used in tiny amounts to keep formulas performing reliably.

Most hair types as part of a balanced formula.

Usually present in small amounts to balance the formula.

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.

All products that need a preservative system.

Often paired with other preservatives for broad protection.

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.

All products that need protecting from spoilage.

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

Those interested in understanding preservative systems or identifying potential fragrance allergens.

Benzyl Alcohol is commonly used in professional haircare to support product stability and texture. It can also naturally occur in some essential oils.

People who enjoy a scented product.

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

Those who enjoy subtly scented haircare products.

It is one of the fragrance components that must be listed separately when present above certain levels. People with known fragrance sensitivities may choose to monitor for it.

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.