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Hair Oil & Hair Treatment

Hair Oil & Hair Treatment

11 products

Hair Care

KUNDAL Honey & Macadamia Treatment White Musk 500 ml

Regular price CHF 18.90
Special price Regular price

Hair Care

HAIR SYRUP Growsmary Pre-Wash Hair Oil – Rosemary Oil for Hair Growth 100ml

Regular price CHF 19.80
Special price Regular price

Hair Care

KUNDAL Protein Bonding Treatment Violet Muguet 500 ml

Regular price CHF 14.90
Special price Regular price

Hair Care

KUNDAL Honey & Macadamia Treatment Cherry Blossom 500 ml

Regular price CHF 18.90
Special price Regular price

Hair Care

KUNDAL Protein Bonding Hair Mist Violet Muguet

Regular price CHF 24.90
Special price Regular price

Hair Care

KUNDAL Honey & Macadamia Treatment Baby Powder 500 ml

Regular price CHF 18.90
Special price Regular price

Hair Care

HAIR SYRUP Superfoods Pre-Wash Hair Oil – Intensive Repair for Damaged Hair 100ml

Regular price CHF 19.80
Special price Regular price

Hair Care

HAIR SYRUP Original Pre-Wash Hair Oil – Nourishing Formula with Coconut & Argan 100ml

Regular price CHF 19.80
Special price Regular price

Hair Care

HAIR SYRUP Lemon-Aid Pre-Wash Hair Oil – Citrus for Fine, Weighed-Down Hair 100ml

Regular price CHF 19.80
Special price Regular price

Hair Care

HAIR SYRUP Zen Pre-Wash Hair Oil – Lavender for Sensitive Scalps 100ml

Regular price CHF 19.80
Special price Regular price

Hair Care

HAIR SYRUP Mint Condition Pre-Wash Hair Oil – Peppermint for Oily Scalps 100ml

Regular price CHF 19.80
Special price Regular price
Buying guide

Hair Oil & Hair Treatment — HAIR SYRUP Pre-Wash Oils

A weekly deep conditioning treatment makes the difference between “okay” and “visibly well-cared-for.” At BONSANA, you’ll find pre-wash oils and hair treatments from the curated collection by HAIR SYRUP—a UK indie brand from Wales, founded by a mom in 2020, and a TikTok sensation.

Everything ships from our Swiss warehouse, with 24-hour shipping and free shipping on orders of CHF 50 or more.

  • Shipped within 24 h from Switzerland
  • Free shipping from CHF 50
  • Swiss family business since 1996

The 8 HAIR SYRUP Pre-Wash Oils

  • Original — the all-rounder, with all your favorite oils
  • Rapunzel — for damaged or thin hair; designed to make hair appear smoother and stronger
  • Growsmary — with rosemary as the active ingredient for scalp care
  • Mint Condition — refreshing peppermint oil, great for an itchy or dry scalp
  • Vitamin C Me — an antioxidant for shine and freshness
  • Lemon-Aid — clarifying for product buildup
  • Zen — soothing with lavender
  • Superfoods — intensive care for very damaged hair

What is a pre-wash oil?

A hair oil that you apply to dry hair before shampooing—along the lengths and ends, and optionally on the scalp. It is left on for 30 minutes to overnight and rinsed out during your next wash. Unlike a leave-in oil (which stays in the hair), pre-wash oil leaves no residue—you get the nourishment without the heavy look.

How to Use

  1. Apply pre-wash oil to dry hair—along the lengths and ends, and optionally massage it into the scalp
  2. Leave on for at least 30 minutes, or optionally overnight
  3. Tip: Wrap your hair in a towel or shower cap to retain heat
  4. When washing, shampoo twice—the first time, the shampoo binds to the oil; the second time, it cleanses thoroughly
  5. Follow with your regular conditioner
  6. Once a week is enough for most people

FAQ: Hair Oil & Hair Treatment

Which HAIR SYRUP is right for which hair type?
To get started: Original (all-rounder). For very damaged hair: Rapunzel or Superfoods. For an itchy scalp: Mint Condition. For dull hair: Vitamin C Me or Lemon-Aid (clarifying).

How long should you leave it on?
At least 30 minutes, preferably 1–2 hours, or optionally overnight. Use an old pillowcase or towel overnight—the oil can seep through.

Pre-wash oil or leave-in treatment?
Pre-wash oil is rinsed out and leaves no residue. Leave-in treatment stays in the hair—good for styling, but can weigh the hair down. HAIR SYRUP is a pre-wash treatment; KUNDAL Treatment is a leave-in treatment.

Are the products vegan?
HAIR SYRUP is entirely vegan and cruelty-free, made in the UK.

How long does a bottle of HAIR SYRUP last?
A 100-ml bottle typically lasts 8–12 weeks with weekly use—one application requires about 5–10 ml, depending on hair length.

Related Topics

Shampoo & Conditioner · Scalp Care & Baldness Care · HAIR SYRUP Brand · TikTok Viral Picks