Paul Mitchell Round Trip Defining Serum 150 ml
Size: 150 ml
Subscribe & save 15% is available on the 150 ml
- Order by 2pm on weekdays for same-day dispatch
- Free UK delivery on orders of £30 or more
- Free click & collect in Bridlington
- Genuine stock from a Paul Mitchell Signature Salon
Why we rate it
A liquid curl definer for bouncy, defined waves and curls. It gives a flexible hold with a touchable finish, conditions and helps protect curls, and helps reduce drying and styling time. Apply a small amount to clean, damp hair, then scrunch or rake it through to define your waves and curls, and air-dry or diffuse. For more softness on dry curls, smooth Full Circle Leave-In Cream through first.
- Liquid curl definer for bouncy, defined waves and curls
- Flexible hold with a touchable finish
- Helps reduce drying and styling time
- Conditions and helps protect curls
- Colour-safe
Stylist’s tip
Rub a small amount between your palms and smooth it over the mid-lengths and ends first, then use whatever is left on your hands nearer the roots.
From the stylists at The Color, Bridlington Paul Mitchell Signature Salon since 2006
Not sure it suits your hair? Call the salon on 01262 671 167
Who it’s for
Hair type
- Wavy
- Curly
Good for
- Frizz
- Curl definition
Hold & shine
How to use
- Apply a small amount to clean, damp hair.
- Scrunch or rake through to define waves and curls.
- Air-dry or diffuse — it helps cut drying time.
Key ingredients
- Panthenol (pro-vitamin B5)
- Helps hair hold on to moisture, leaving it softer and shinier.
- Minerals
- Help condition, protect and strengthen wavy and curly hair.
Full ingredients
Water (Aqua, Eau), Panthenol, Hydroxypropyltrimonium Hydrolyzed Corn Starch, PEG-12 Dimethicone, Hydroxyethylcellulose, Polyquaternium-55, Magnesium Sulfate, Ethylhexylglycerin, Caprylyl Glycol, Hexylene Glycol, Phenoxyethanol, Fragrance (Parfum), Acetyl Cedrene, Amyl Salicylate, Benzyl Benzoate, Benzyl Salicylate, Citronellol, Citrus Aurantium Peel Oil, Geraniol, Geranyl Acetate, Hexamethylindanopyran, Hexyl Cinnamal, Hydroxycitronellal, Limonene, Linalool, Terpineol, Tetramethyl Acetyloctahydronaphthalenes
Ingredients from Paul Mitchell UK · checked 29 September 2026. Formulations can change, so always check the pack.
Good to know
- Vegan
- Cruelty-free
- Colour-safe
- Paraben-free
- Made without gluten
Formula claims as stated by Paul Mitchell.
Scent Tropical fruits with blackcurrant
Delivery & returns
- Free UK delivery on orders of £30 or more, otherwise £3.95.
- Order by 2pm Monday to Friday for same-day dispatch. Delivery usually takes 1–3 working days.
- Free click & collect from our salon at 55 Flamborough Road, Bridlington, YO15 2JH. We’ll email you when it’s ready.
- 30-day returns on unopened items. Read our returns policy
Frequently asked questions
What does Paul Mitchell Round Trip Defining Serum do?
It's a liquid curl definer for bouncy, defined waves and curls, with a flexible hold and a touchable finish. It conditions and helps protect curls, and helps cut drying time.
How do I use Round Trip?
Apply a small amount to clean, damp hair, scrunch or rake it through to define waves and curls, then air-dry or diffuse. For more softness on dry curls, smooth Full Circle Leave-In Cream through first.
Which curl types is Round Trip for?
Waves and curls, which Paul Mitchell puts at curl types 2A to 3C. For coils that need smoothing and shine, Foaming Pomade covers curl types up to 4C.
Round Trip or Twirl Around: which should I choose?
Round Trip is a liquid serum that defines and adds bounce with a flexible hold. Twirl Around Cream Serum is a hydrating cream and smoothing serum in one, for curls that need softness and separation as well as definition.
Is Round Trip Defining Serum vegan and colour-safe?
Yes. Paul Mitchell lists it as vegan, colour-safe, paraben-free and gluten-free. It comes in a 150 ml bottle.
