Sebastian Trilliance Shampoo and Conditioner Duo

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.

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.

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.

Most hair types, including those wanting a gentler wash.

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

Anyone using products designed to stay within a specific pH range, such as colour‑treated or chemically treated hair.

It also has mild chelating abilities, helping formulas remain stable in the presence of minerals found in water. Its use supports the consistency and performance of many shampoos and conditioners.

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 using shampoos or cleansers that need a consistent texture and even distribution.

It is commonly used as a hydrotrope, meaning it helps surfactants blend smoothly and maintain the right viscosity. It does not typically contribute strong cleansing on its own.

People who enjoy a scented product.

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

All products that need a preservative system.

Often paired with other preservatives for broad protection.

Most hair types as part of a balanced formula.

Usually present in small amounts to balance the formula.

Those interested in how a product’s texture and lather are achieved.

It is a simple mineral salt that helps create a familiar shampoo feel and can influence how a cleanser spreads through the hair.

People dealing with flaky scalps, congestion or product buildup.

It is widely used in scalp-care formulas because it breaks down excess oils and debris without needing physical scrubbing. Often found in dandruff-control products.

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

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

Those in hard-water areas who want shampoos and conditioners to rinse more cleanly.

Chelating agents can support formula consistency and help prevent minerals from depositing on the hair or interfering with product texture. They are widely used in many rinse-off and leave-in formulations.

Anyone who wants products to stay fresh and stable over time.

Parabens like methylparaben are widely used because they are effective in very small amounts and have a long history of use in cosmetics. They help maintain product quality, especially in water-based formulas.

Those looking for softer, easier-to-detangle hair.

It is derived from guar gum and is commonly used to enhance conditioning in shampoos and conditioners. It can also reduce static and improve manageability.

Those who enjoy subtly floral-scented haircare or are monitoring specific fragrance allergens.

It is one of the fragrance allergens that must be listed individually on product labels when present above certain levels. Its presence does not indicate product strength or quality, only that it contributes to the overall scent profile.

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.

Those interested in how a product’s pH is balanced, especially for colour‑treated or chemically processed hair.

It is used in very small, controlled amounts to fine‑tune a product’s acidity during manufacturing. The final product’s pH is carefully set for safe, everyday use.

Those using styling or dry-finish products that benefit from a lightweight, matte feel.

It is a common mineral ingredient used to enhance spreadability and stabilise product textures. It appears in a wide range of hair and styling products for its versatility.

Those who prefer products using widely accepted preservative systems.

It is commonly used in both cosmetic and food products due to its effectiveness in maintaining formula stability. It is typically used at low levels and works well alongside other preservation ingredients.

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 interested in how products are balanced for optimal performance and scalp comfort.

It is commonly used to fine-tune acidity so that formulas remain effective and comfortable to use. Only small amounts are typically required to achieve the desired pH.

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 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 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.

Those looking for improved slip, manageability and reduced static, especially in dry or textured hair.

It is often paired with fatty acids to enhance conditioning performance and provide a softer feel. It also helps detangle without weighing hair down.

People looking for conditioners or treatments that provide slip, softness and richer textures.

Although called an alcohol, it is a waxy, non‑drying fatty alcohol commonly used to enhance conditioning performance and product stability.

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 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.

People who enjoy a scented product.

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

Most hair types as part of a moisturising formula.

A widely used humectant and carrier ingredient.

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.

Those seeking added slip, manageability or a richer, more emollient feel in conditioners and treatments.

Fatty alcohols like oleyl alcohol are different from simple drying alcohols and are commonly used to enhance texture and conditioning performance in haircare formulas.

Those who like richer conditioners or masks that feel smooth and spread easily.

It also offers light conditioning and can help soften the feel of hair. It is widely used in both skincare and haircare for its reliable stabilising properties.

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.

Anyone who wants products to stay fresh and stable over time.

Parabens like methylparaben are widely used because they are effective in very small amounts and have a long history of use in cosmetics. They help maintain product quality, especially in water-based formulas.

Those using creams or conditioners that rely on smooth, even textures.

It is widely used in haircare to ensure consistent texture and to help disperse ingredients evenly. It also offers mild surfactant properties that support product spreadability.

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 who enjoy subtly floral-scented haircare or are monitoring specific fragrance allergens.

It is one of the fragrance allergens that must be listed individually on product labels when present above certain levels. Its presence does not indicate product strength or quality, only that it contributes to the overall scent profile.

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.

Those using styling or dry-finish products that benefit from a lightweight, matte feel.

It is a common mineral ingredient used to enhance spreadability and stabilise product textures. It appears in a wide range of hair and styling products for its versatility.

Those who prefer products using widely accepted preservative systems.

It is commonly used in both cosmetic and food products due to its effectiveness in maintaining formula stability. It is typically used at low levels and works well alongside other preservation ingredients.

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 interested in how products are balanced for optimal performance and scalp comfort.

It is commonly used to fine-tune acidity so that formulas remain effective and comfortable to use. Only small amounts are typically required to achieve the desired pH.