The INKEY List Caffeine Scalp Treatment 5.07 fl oz — Overnight serum with Redensyl for softer, invigorated hair

The INKEY List Caffeine Stimulating Scalp Treatment is an overnight serum that combines caffeine powder and Redensyl to support the natural hair growth cycle and leave hair feeling softer.

This lightweight scalp treatment is formulated to be used nightly as a targeted boost for the scalp and hair follicles. The formula combines caffeine powder to invigorate the scalp with Redensyl, an ingredient designed to support hair growth pathways, plus betaine to condition strands. It’s fragrance-free, cruelty-free, and made to work across a range of hair types, including colour-treated hair.

How does this treatment support the hair growth cycle?

The serum targets the scalp environment to help keep follicles in a state conducive to hair growth rather than making medical claims. Ingredients are chosen to stimulate and condition the area around the follicle while you sleep, when the product is left on overnight for extended exposure. Consistent nightly use is recommended to see gradual improvement over time.

• Redensyl: formulated to interact with hair follicle cells to support growth pathways.
• Caffeine powder: applied topically to invigorate the scalp.
• Overnight application: prolonged contact for potential cumulative benefits.

How do I use it in my evening routine?

Use the treatment as a simple final step before bed. Shake the bottle, dispense into the palm, rub hands together and massage into the scalp using fingertips; leave on overnight and wash as usual in the morning if desired.

• Shake before use to ensure even distribution of active ingredients.
• Massage evenly to cover the whole scalp; focus on thinner areas if needed.
• Use nightly for best results; follow a 3-month period for consistent evaluation.

Is it suitable for my hair type and colour-treated hair?

This formula is designed to be compatible with most hair types, including coloured and chemically treated hair. It’s fragrance-free to reduce sensitivity risk and cruelty-free for ethical preference. If you have specific scalp conditions or treatments, consult a professional before introducing a new topical product.

• Safe for coloured hair when used as directed.
• Fragrance-free to limit irritation risk.
• Formulated to be lightweight so it won’t heavily weigh down fine hair.

What results can I expect and when?

Individual responses vary, but the brand recommends nightly use for up to three months to assess change. You may notice hair feeling softer due to conditioning ingredients, with any improvements to thickness or density developing gradually over time. Regular application helps give active ingredients consistent contact with the scalp.

• Softening effect from betaine and conditioning agents.
• Gradual, cumulative support for the hair cycle with nightly application.
• Recommended evaluation period: about three months of consistent use.

Who is this for: The INKEY List Caffeine Stimulating Scalp Treatment is aimed at anyone seeking a non-invasive, fragrance-free overnight scalp serum to support the hair growth cycle and improve scalp condition. It’s suitable for people with fine or thinning hair, those with coloured hair, and users who prefer a simple nightly application. If you have an existing scalp medical condition or are on scalp-prescription treatments, speak with your healthcare professional before use.