Colour care

Colour care is about protecting dyed or chemically treated hair from fade, oxidative stress, and cuticle roughness that turns matte. Colour molecules lodge between lifted cuticle scales. When those scales stay open or porous, pigment leaches with every wash. OVESSI uses low-pH formulas, UV filters, and gentle surfactants to seal the cuticle, slow fade, and keep colour looking saturated for longer.

What is happening

When hair is coloured, an alkaline developer lifts the cuticle scales so dye molecules can enter the cortex. Once the process completes, those scales should lie flat again, but chemical stress leaves them rough and porous. Each wash cycle introduces water, which swells the shaft and allows colour molecules to migrate outward. Hard water minerals, UV exposure, and high-pH cleansers accelerate this fade. Oxidative damage from peroxide or bleach also weakens disulfide bonds in the keratin structure, making hair more fragile and less able to hold pigment. The result is dullness within two weeks, brassiness in lightened hair, and a texture that feels dry or straw-like. Preserving colour means keeping the cuticle smooth, the pH low, and the cortex intact so molecules stay locked in place.

The OVESSI point of view

We think colour care should feel like maintenance, not rescue. The goal is not to reverse damage after it happens but to slow the forces that cause fade in the first place. This ties to our pillar of Japanese calmness, where restraint and consistency matter more than intensity. A gentle sulfate-free cleanse with a pH close to hair's natural 4.5 to 5.5 prevents cuticle swell. A rinse infused with UV filters and antioxidants blocks the light and oxygen that degrade pigment. Protein reinforcement from keratin or wheat amino acids fills gaps left by chemical processing, so the hair behaves like a sealed vessel rather than a leaky sieve. We choose actives that protect what is already there, not promise to rebuild what is lost.

The ritual we built for it

The OVESSI hair colour care ritual is built around one anchor cleanser and a patient rinse cycle. Start with The Colour : Peachy Grapefruit Colour Care Shampoo, a low-pH, sulfate-free formula that removes buildup without stripping pigment. Lather only at the scalp, let water carry foam through the lengths. Follow with a cool-water rinse, which encourages cuticles to close. If your hair is porous or bleached, add a leave-in protein mist or a few drops of argan oil to damp ends before air-drying. This is not a four-step ritual in the skincare sense, but the principle is the same. Layer gentle protection, rinse with intention, and repeat twice a week or as needed. Consistency, not frequency, is what keeps colour saturated through week eight and beyond.

The actives that answer it

Three actives anchor our approach to colour care. Wheat protein deposits a thin film of amino acids along the cuticle, filling microfissures left by chemical processing and preventing colour molecules from escaping. Keratin reinforces the cortex by mimicking the hair's own structural protein, which restores tensile strength and reduces porosity. Argan oil delivers tocopherols and essential fatty acids that neutralize free radicals from UV and heat, slowing oxidative fade. Together, these three work to seal, strengthen, and shield, addressing the three main pathways of colour loss without weighing hair down or building up over time.

Products on our shelf

For colour care, we keep one essential on the shelf. The Colour : Peachy Grapefruit Colour Care Shampoo is a sulfate-free cleanser formulated at pH 5.2, with wheat protein, keratin, and a UV filter blend to prevent fade and cuticle roughness. It removes sebum and styling residue without swelling the hair shaft or stripping pigment. Use it two to three times per week, alternating with a clarifying wash if you layer heavy oils or silicones. One tube lasts roughly eight weeks with shoulder-length hair, longer if you cleanse less frequently. This is the quiet anchor of a colour-preserving ritual, not a treatment mask or real shift repair, just consistent protection applied with intention.

What to expect, and when

Day zero to day seven, you will notice less lather than a traditional shampoo, because sulfate-free surfactants foam gently. Your hair may feel slightly different as it adjusts to a lower-pH cleanser, less squeaky, more smooth. By day fourteen, colour should look more saturated under natural light, with less brassiness in lightened hair. By day twenty-eight, the difference becomes clear when you compare roots to ends. Colour that would typically fade to a washed-out version of itself stays closer to salon depth. In our 28-Day Study with sixty-eight participants across four weeks, those using the colour care shampoo reported hair that felt quieter, softer, and held pigment through an average of twelve washes. This is not reversal of damage, but measurable delay of fade.

Common questions

Can I use this on non-coloured hair? Yes, the low pH and gentle surfactants benefit all hair types, especially if your water is hard or your scalp is sensitive.

Will it strip my scalp of natural oils? No, the formula is designed to cleanse sebum and buildup without disrupting the lipid barrier or leaving the scalp tight.

How often should I wash coloured hair? Two to three times per week is ideal for most textures, less if your hair is dry or coarse, more if your scalp produces excess sebum.