Collection: Serums

Shop professional hair serums in South Africa. Anti-frizz serums, smoothing serums, repair serums, glossing serums, and leave-in shine treatments from Kérastase, Moroccanoil, Olaplex, L'Oréal Professionnel, Redken, Schwarzkopf, and more. 100% authentic, sourced from authorised distributors. Free delivery on orders over R390 across South Africa.

What Is a Hair Serum

A hair serum is a concentrated, silicone- or polymer-based finishing product designed to smooth the cuticle, control frizz, add shine, protect from humidity, and deliver active ingredients to the hair surface. Serums sit on top of the hair shaft rather than penetrating deep — they work by creating a smooth, light-reflective barrier that flattens flyaways and seals split ends temporarily. Unlike hair oils (which are oil-based and can be heavier), serums are typically lightweight, fast-absorbing, and suitable for fine hair.

Hair Serum Types

Anti-Frizz Serums — humidity-resistant formulas that seal the cuticle and prevent moisture from entering the hair shaft. Top picks: Kérastase Discipline Oléo-Relax, Moroccanoil Frizz Shield, L'Oréal Liss Unlimited Serum, and Redken Frizz Dismiss.

Smoothing and Glossing Serums — for instant shine and silky finish. Kérastase Elixir Ultime, Schwarzkopf BC pH 4.5 Color Freeze Smoothing Serum, and L'Oréal Vitamino Color 10-In-1.

Repair Serums — combine smoothing with bond-rebuilding or strengthening actives. Olaplex No.7 Bonding Oil (technically an oil but functions like a serum), L'Oréal Absolut Repair Molecular Bi-Phase, and Kérastase Résistance Sérum Extentioniste.

Heat Protection Serums — apply before heat styling for combined frizz control and thermal protection. Kérastase Elixir Ultime, Moroccanoil Treatment, and Redken Frizz Dismiss Smooth Force.

Scalp Serums — applied directly to the scalp for hair loss, scalp balance, or anti-dandruff treatment. Kérastase Spécifique Potentialiste, Kérastase Spécifique Stimuliste, Schwarzkopf BC Scalp Genesis, and DS Laboratories Spectral. (See our Hair Loss and Anti-Dandruff collections for full scalp-specific ranges.)

How to Use Hair Serum

1. Start small — 1-2 pumps for fine hair, 2-3 pumps for medium hair, 3-4 pumps for thick hair. You can always add more.
2. Apply to damp or dry hair — damp hair for all-over smoothing, dry hair for spot-treating flyaways and adding shine.
3. Mid-lengths to ends only — avoid the roots, which can quickly look greasy.
4. Warm between palms first — rubbing between hands ensures even distribution and prevents clumping.
5. Layer with leave-in — apply leave-in conditioner first (water-based), then serum (silicone-based) for maximum benefit.
6. Heat styling — many serums double as heat protectants. Apply before blow-drying for combined shine and protection.

Hair Serum vs Hair Oil — What's the Difference?

Hair serums are typically silicone or polymer-based, lightweight, fast-absorbing, and focused on smoothing the cuticle surface. Hair oils are oil-based (argan, jojoba, marula, etc.), can be heavier, often penetrate into the hair shaft, and deliver more nourishment. For fine hair, serums usually work better — lighter weight, less greasy feel. For thick or coarse hair, oils provide more substantial conditioning and shine. Many products technically straddle both categories (Olaplex No.7, Kérastase Elixir Ultime). See our Hair Oils collection for the full oil range.

Frequently Asked Questions

What is the best hair serum in South Africa? Kérastase Elixir Ultime is one of the most universally recommended hair serums in South Africa — luxurious finish, lightweight feel, suitable for almost any hair type. For anti-frizz performance specifically, Kérastase Discipline Oléo-Relax or Redken Frizz Dismiss deliver salon-grade humidity resistance. Olaplex No.7 Bonding Oil combines serum-like finish with bond-rebuilding repair.

Can I use serum every day? Yes — most lightweight hair serums are formulated for daily use. A small amount applied to mid-lengths and ends adds shine and smooths frizz without causing build-up over time. Avoid applying to the scalp or roots, where daily product can cause greasiness.

Will hair serum weigh down fine hair? Only if over-applied. Fine hair benefits from 1-2 pumps maximum, applied to mid-lengths and ends only. Choose lightweight serums (Kérastase Elixir Ultime, Olaplex No.7) rather than heavy oils.

Are hair serums silicone-free? Some are, most are not. Silicones are not harmful but can cause build-up over time, requiring occasional clarifying washes. Silicone-free serums often use plant-derived polymers for similar smoothing effects. Check ingredient lists if silicone-free is a priority.

Why Buy Hair Serums from Partners Hair Design?

Partners Hair Design is an authorised stockist of every professional hair serum brand we carry — Kérastase, Moroccanoil, Olaplex, L'Oréal Professionnel, Redken, Schwarzkopf, Wella, Goldwell, and more. All products are 100% authentic, sourced directly from official South African distributors. Free delivery on orders over R390 across South Africa. For specific serum recommendations based on your hair type and concerns, our stylists at Cape Town salons can help you choose between anti-frizz, smoothing, repair, or scalp serums.