Hair Serum

Shop hair serum online in South Africa at Partners Hair. Professional smoothing serums, scalp serums and repair serums from Kérastase, Moroccanoil, Redken, Olaplex, Kevin Murphy and more — all 100% authentic from an authorised stockist.

What a Hair Serum Does

A hair serum is a concentrated leave-in treatment that targets a specific concern — smoothing frizz, sealing split ends, adding shine, protecting against heat, or stimulating the scalp. Unlike oils, serums are formulated to deliver actives in a lightweight, fast-absorbing base, making them the precision tools of a haircare routine.

How to Choose the Right Hair Serum

Frizz and smoothing: Silicone- or oil-based smoothing serums coat the cuticle to block humidity and add gloss — ideal for frizzy, coarse, or humidity-prone hair.

Scalp and hair fall: Leave-on scalp serums with actives like Aminexil or Stemoxydine work at the follicle level — the most important step in any thinning-hair routine.

Repair and split ends: Bond-building and reconstructive serums reinforce damaged lengths and seal frayed ends between trims.

Shine and finishing: Lightweight gloss serums applied to dry hair deliver instant polish without weight.

How to Use Hair Serum

Smoothing and repair serums: apply 2–3 drops to damp hair, mid-lengths to ends, before styling. Scalp serums: apply directly to a clean scalp in sections and massage in — do not rinse. Finishing serums: warm a drop between palms and smooth over dry, styled hair.

Frequently Asked Questions

What's the difference between hair serum and hair oil? Serums are concentrated, lightweight, and targeted at a specific result; oils are richer, primarily nourishing, and better for deep conditioning. Fine hair generally tolerates serums better than oils.

Can I use hair serum every day? Yes — smoothing and finishing serums are designed for daily use. Scalp serums for hair fall are typically used daily or several times a week as directed, and consistency over 3–6 months is what delivers results.

Should serum go on wet or dry hair? Both, depending on the type: smoothing and heat-protective serums on damp hair before styling; gloss and anti-frizz finishing serums on dry hair. Scalp serums go on a clean, towel-dried scalp.

Why Buy from Partners Hair?

Partners Hair is an authorised stockist of every brand we carry — 100% authentic, sourced from authorised distributors. Free delivery on orders over R390 across South Africa, with same-day dispatch on weekday orders placed before 1pm. Need a recommendation? Our stylists across 24 Cape Town salons use these serums in the chair every day.