OI All In One Milk

from £20.50

Hydrating leave-in milk for smooth, frizz-free hair

This is the one you keep coming back to. OI All In One Milk is a lightweight, leave-in conditioning spray that does a bit of everything, without any fuss. It hydrates, softens, detangles and helps control frizz, leaving hair smooth, shiny and easy to manage. Perfect for busy mornings and low-effort good hair days.

Formulated with antioxidant-rich Roucou oil, along with provitamin B5 and a functional amino complex, it helps protect hair from daily stress and heat styling up to 230°C. Ideal for fine to medium hair, it adds moisture without weighing hair down, while still offering enough hydration for thicker or coarser lengths. Finished with the warm, signature OI fragrance, it leaves hair looking polished and feeling beautifully cared for.

Why we love it

  • Hydrates, softens and controls frizz in one step

  • Detangles and adds shine without heaviness

  • Provides heat protection up to 230°C

94.7% Naturally derived ingredients
Vegan friendly

Size:

Hydrating leave-in milk for smooth, frizz-free hair

This is the one you keep coming back to. OI All In One Milk is a lightweight, leave-in conditioning spray that does a bit of everything, without any fuss. It hydrates, softens, detangles and helps control frizz, leaving hair smooth, shiny and easy to manage. Perfect for busy mornings and low-effort good hair days.

Formulated with antioxidant-rich Roucou oil, along with provitamin B5 and a functional amino complex, it helps protect hair from daily stress and heat styling up to 230°C. Ideal for fine to medium hair, it adds moisture without weighing hair down, while still offering enough hydration for thicker or coarser lengths. Finished with the warm, signature OI fragrance, it leaves hair looking polished and feeling beautifully cared for.

Why we love it

  • Hydrates, softens and controls frizz in one step

  • Detangles and adds shine without heaviness

  • Provides heat protection up to 230°C

94.7% Naturally derived ingredients
Vegan friendly

Warnings

KEEP OUT OF REACH OF CHILDREN. IN CASE OF ACCIDENTAL INGESTION, CALL A POISON CONTROL CENTRE OR DOCTOR IMMEDIATELY AND ADVISE THEM THIS PRODUCT CONTAINS EUCALYPTUS OIL. AVOID CONTACT WITH THE EYES. IN CASE OF CONTACT RINSE THOROUGHLY.