Sebastian Potion 9: The Cult Leave-In, Explained

Potion 9 has been in salons for decades and still sells out. It's a leave-in that does two jobs at once, it conditions and gives a light, workable hold, which is why people get hooked on it.

What it actually does

It's built around nine botanical ingredients that smooth and soften, while a light styling base lets you shape hair without it going crunchy. Think of it as a treatment you can also style with.

How to use it

Work a small amount through towel-dried hair, mid-lengths to ends, then style as normal. A little goes a long way, so start small and build up. It's just as happy on dry hair as a midweek refresh.

The range

Alongside the original there's a Lite version for finer hair, a leave-in conditioner and styling cream, and the Pro Grade Powder for instant texture and lift at the roots. See the Potion 9 range →

Who it suits

If your hair drinks up product and still wants movement, Potion 9 is a safe bet. Drier and coarser hair loves the original; finer hair will get on better with the Lite.

Shop the range: Every Sebastian line is already 11% off RRP, sent NZ-wide with free shipping over $75. Shop Sebastian Professional →

Every order over $59 comes with a free Kérastase travel-size gift, added automatically at checkout. Free NZ shipping over $75.

More Sebastian guides

• Dark Oil: the complete range
• NO.BREAKER: bond building explained
• NO.BREAKER vs Olaplex
• Penetraitt: repair for damaged hair
• Hydre: moisture for dry hair
• Twisted: curls without the crunch
• Volupt Max for fine hair
• Hairsprays: Re-Shaper vs Zero Gravity vs Fierce
• Every Sebastian styling product
• Trilliant: heat protection with shine
• Where to buy Sebastian in NZ

Shop the full Sebastian Professional range