Semi Di Lino Diamond Illuminating Shampoo & Mask Duo 2 items

Oily scalps, heavy product users and people who like a strong cleanse.

May feel too cleansing for some dry, curly, colour-treated or sensitive hair types. This depends on the full formula and your hair needs.

Oily scalps and routines that need a strong, clarifying wash.

Can be more cleansing than gentler surfactants. Many people use it happily, while others prefer milder options for everyday washing.

Most hair types, including those wanting a gentler wash.

Often paired with other surfactants to make a formula feel milder.

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.

People looking for enhanced styling hold or frizz control.

It is widely used in styling products to help shape and set the hair without feeling heavy. It also contributes to product consistency and spreadability.

Those who like creamy, luxurious-feeling shampoo or conditioner textures.

It also provides a mild conditioning feel, helping formulas spread smoothly through the hair. Its use is common in many everyday cleansing products.

Those who prefer shampoos with a richer, creamier foam.

It is made from fatty acids derived from coconut oil and monoethanolamine and is commonly used to stabilise foam and improve texture. It can also help thicken surfactant-based formulas.

People who enjoy a scented product.

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

Those who want products with reliable preservation, especially in water-rich formulas.

It is a widely used preservative that works by slowly releasing small amounts of formaldehyde to maintain product stability. This is common in many cosmetic preservatives and is regulated for safe use.

Hair wanting added body, smoothness or temporary strength.

A common protein in repair and volumising formulas.

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 protecting from spoilage.

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

All products, especially in hard-water areas.

Used in tiny amounts to keep formulas performing reliably.

People looking to maintain colour-treated hair or reduce UV impact on hair and scalp.

It is often used to help stabilise formulas that may be exposed to sunlight. Its presence can support the longevity of colour care products.

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.

People looking for improved slip, reduced frizz or easier detangling.

It is commonly used in shampoos, conditioners and styling products to enhance manageability and provide a light, non‑heavy feel. It is well known for offering conditioning benefits without weighing the hair down.

Most hair types as part of a moisturising formula.

A widely used humectant and carrier ingredient.

Useful for dry, damaged, chemically treated or porous hair seeking lightweight strengthening.

These amino acids are smaller than whole proteins, allowing them to offer conditioning benefits without adding heaviness. They are commonly included in both rinse-off and leave-in formulas.

Those who enjoy glossy, light-reflective or shimmering finishes in styling products.

It is often used as a base for pearlescent or iridescent pigments and is valued for its smooth, reflective appearance. Its particle size can influence how subtle or bold the shimmer appears.

Those who want products with reliable preservation, including professionals who need consistent shelf stability.

Ethylparaben is part of the paraben family, which has been widely used for many years due to its effectiveness in small amounts. It is often combined with other preservatives to create a broad‑spectrum system.

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.

Anyone using products that benefit from a long, reliable shelf life.

Propylparaben is a widely used preservative that helps maintain product quality and freshness. It is used at very low levels and is well studied for its role in keeping formulations stable.

Those interested in how a product’s preservation system is maintained.

It is commonly paired with other preserving ingredients to help keep formulas consistent over time. Its role is supportive rather than active in terms of preservation.

Those interested in product appearance or opacity, such as in creams or conditioners.

It is commonly used to create a uniform, opaque look and can also help stabilise formula appearance. Its presence does not affect how the product performs on the hair.

Those looking for products with robust preservation, particularly in rinse-off formulas.

It is widely used in small amounts to protect formulas from microbial growth. Some people with sensitive skin or scalps may prefer to patch test products containing isothiazolinone preservatives.

People using styling or leave-in products that benefit from consistent texture and performance.

Magnesium chloride can also contribute mild humectant properties, helping formulas retain moisture. It is commonly used alongside other salts to adjust product feel and stability.

Those needing products with reliable protection against product spoilage.

It is effective in very small amounts to support product longevity. Some people with sensitive skin or scalps may prefer to patch test products containing this preservative.

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.

Those looking for added slip and softness, especially in conditioners or masks.

Fatty alcohols are different from drying alcohols and are commonly used to create rich, creamy textures. They also help formulators stabilise emulsions.

Most hair types as part of a moisturising formula.

A widely used humectant and carrier ingredient.

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.

Those looking for reduced frizz, easier detangling or a smoother finish.

Its PEG/PPG modification makes it more dispersible in water than many traditional silicones. It is commonly used in lightweight leave-ins and conditioners for a silky feel.

People seeking improved manageability, reduced frizz or a silkier feel in their hair.

It is a cationic ingredient that deposits easily on the hair surface to enhance slip and detangling. Commonly used in conditioners, masks and leave-ins for a smoother finish.

Those who prefer products with a smoother, more cushioning texture or want improved slip in shampoos and conditioners.

It can also provide light conditioning benefits by helping hair feel softer and easier to detangle. It is commonly used in both rinse-off and leave-in products.

Most hair types wanting smoother, easier-to-manage hair.

Widely used in shampoos and conditioners for slip and softness.

People who enjoy a scented product.

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

Those who want products with reliable preservation, especially in water-rich formulas.

It is a widely used preservative that works by slowly releasing small amounts of formaldehyde to maintain product stability. This is common in many cosmetic preservatives and is regulated for safe use.

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.

Those using shampoos or washes that benefit from a richer, more stable texture.

It is a nonionic surfactant derived from glucose and is commonly used to improve viscosity in gentle cleansing products. It is well tolerated in most haircare formulas.

Most hair types as part of a balanced formula.

Usually present in small amounts to balance the formula.

All products, especially in hard-water areas.

Used in tiny amounts to keep formulas performing reliably.

Those who enjoy glossy, light-reflective or shimmering finishes in styling products.

It is often used as a base for pearlescent or iridescent pigments and is valued for its smooth, reflective appearance. Its particle size can influence how subtle or bold the shimmer appears.

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.

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.

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.

Those interested in product appearance or opacity, such as in creams or conditioners.

It is commonly used to create a uniform, opaque look and can also help stabilise formula appearance. Its presence does not affect how the product performs on the hair.