Best Conditioner for Dull Hair

The best conditioner for dull hair is the one that fixes the reason your hair stopped shining. Shine is just light bouncing off a smooth surface. When the outer layer of each strand, the cuticle, is rough, lifted or coated in product, light scatters and hair looks flat. Conditioner smooths that layer back down. So before you pick one, work out what's roughing it up.

Work out why your hair looks dull

It feels dry and rough. Hair that's short on moisture looks dull and often frizzes too. Start with the best conditioner for dry hair.
It's been coloured, bleached or heat styled a lot. Chemical and heat damage lift the cuticle and keep it lifted. A repairing formula makes more sense here, like our best conditioner for dry damaged hair.
It feels coated or heavy, even straight after washing. That's buildup from styling products, silicones or hard water. A richer conditioner will only add to it. Fix the wash first with our best shampoo for dull hair, then use a lighter conditioner.
It's oily at the roots and flat all over. Heavy formulas weigh this hair down, and flat hair reads as dull. Look at the best conditioner for greasy hair and keep it off the scalp.
It's curly. Curls reflect less light than straight hair because the surface is never flat. That's normal, not a problem to fix. Aim for soft, defined curls rather than a glassy finish, and start with the best conditioner for curly hair.

What to look for

Most conditioners sold for shine are smoothing formulas. They use oils or silicones to lay the cuticle flat and add slip. If you're after the best conditioner for glossy hair, that's the type to shop.

The trade-off is weight. On fine hair, or used every wash on hair that's already coated, these can build up and bring the dullness straight back. Match the formula to your hair:

Fine hair: a lightweight conditioner. Flat hair never looks shiny, however smooth it is.
Medium hair: a smoothing or shine conditioner most washes, with a clarifying wash now and then to clear buildup.
Thick or coarse hair: a richer formula, left on a little longer.

If what you really want is hair that feels smooth and moves well, not just shine, our picks for the best conditioner for silky hair are the closer match.

There's no single best conditioner for shiny hair that suits every head. We stock salon-quality conditioners from professional brands side by side, so you can compare formulas in one place. To see every option, shop all conditioner.

How to use it for more shine

Squeeze the water out first so the conditioner doesn't slide straight off.
Work it through the mid-lengths and ends. Roots rarely need it.
Comb it through with a wide-tooth comb while it's in.
Leave it on for a few minutes, then rinse well. Conditioner left sitting in the hair looks dull too.
If your ends still look flat once dry, add a leave-in to damp lengths. Browse our best leave in conditioner for dull hair picks.

When conditioner won't fix it

Conditioner smooths the surface. It can't join split ends back together. If your ends are split or see-through, a trim will do more for shine than any bottle. The same goes for hair that's been bleached past its limit: conditioner will make it feel softer and easier to manage, but it won't bring back the shine of healthy hair. Treat it well, keep the heat down, and let the new growth come through.