Conditioner vs hair mask is a comparison between an everyday essential and an occasional treatment. Both coat and soften the hair after shampoo. A conditioner is light, works in a minute or two, and is used at every wash. A mask, also called a deep conditioner, is richer and is left on for longer, once a week or so.
How we approached this guide
We compared the two product types by their usual ingredients, directions and purpose. The descriptions are general. No specific conditioners or masks were tested for this guide.
What conditioner does
Shampoo lifts the cuticle, the outer layer of the hair, and removes oils. Conditioner:
- Smooths the cuticle back down.
- Reduces static and tangles.
- Adds slip, softness and shine.
- Protects hair from friction during combing.
Its key ingredients are positively charged conditioning agents, which cling to the hair, together with fatty alcohols, silicones and light oils.
What a hair mask does
A mask contains the same kinds of ingredient in higher amounts, often with extra oils, butters, proteins or humectants. It has a thicker texture and stays on for longer, so that more of it is deposited on, and into, the outer layers of the hair.
Side-by-side comparison
| Conditioner | Hair mask | |
|---|---|---|
| Texture | Light to medium cream | Thick, rich |
| Contact time | 1 to 3 minutes | 5 to 20 minutes, or as directed |
| Frequency | Every wash | About once a week |
| Main job | Detangle, smooth | Intensive softening or strengthening |
| Weight on hair | Light | Heavier |
| Best for | All hair types | Dry, damaged, colored, curly or coarse hair |
| Cost per use | Low | Higher |
Types of mask
| Type | Key ingredients | For |
|---|---|---|
| Moisturizing | Glycerin, oils, butters, fatty alcohols | Dry, rough, frizzy hair |
| Protein or strengthening | Hydrolyzed keratin, wheat, silk or soy protein | Bleached, heat-damaged, over-processed hair that feels limp or stretchy |
| Bond-building | Ingredients designed to reinforce links inside the hair | Bleached and chemically treated hair |
| Color-depositing | Pigments | Refreshing tone between color appointments |
Too much protein can leave hair stiff and brittle. Alternate protein masks with moisturizing ones. See Bleached Hair Care: Washing and Conditioning Tips.
Who needs what
- Fine, oily or short hair: a light conditioner on the ends. A mask occasionally, or not at all.
- Normal hair: conditioner at every wash, and a mask every week or two.
- Dry, thick, curly or coily hair: rich conditioner at every wash, and a mask weekly.
- Colored, bleached or heat-styled hair: conditioner at every wash, and a mask weekly.
Porosity matters too. Highly porous hair benefits most from masks. See Hair Porosity: What It Is and Why It Matters.
How to use conditioner
- Squeeze excess water from your hair after shampooing.
- Apply from mid-length to the ends. Keep it off the roots, unless your hair is very dry or coily.
- Detangle with your fingers or a wide-tooth comb.
- Leave for one to three minutes.
- Rinse.
How to use a mask
- Shampoo, and gently squeeze out the water.
- Apply the mask in sections, concentrating on the ends.
- Comb it through.
- Leave it for the time on the label. A shower cap keeps in warmth, and helps the mask to spread.
- Rinse thoroughly.
- On mask days, you can skip conditioner, or use a small amount afterwards if the hair still tangles.
Leaving a mask on for hours, or overnight, rarely adds benefit, unless the product is designed for it, and it can leave hair limp.
Can a mask replace conditioner?
On the day you use it, yes. Using a rich mask at every wash can weigh hair down and cause build-up. If that happens, use a clarifying shampoo. See Clarifying Shampoo vs Regular Shampoo: When Each Fits.
Can conditioner be used as a mask?
Leaving your usual conditioner on for ten minutes gives a mild boost, and costs nothing extra. A true mask is richer, but this is a reasonable option for fine hair.
Signs you need more conditioning
- Hair tangles easily, and feels rough when wet.
- Ends look dull, and split quickly. See Split Ends: Causes and Ways to Reduce Breakage.
- Frizz and static.
- Hair snaps when stretched.
Signs you are over-conditioning
- Limp, flat or greasy-looking hair.
- Curls that will not hold their shape.
- A coated feel.
For products that stay in the hair, see Leave-In Conditioner vs Hair Serum: Which Do You Need?.
Related on ArniSun
- Leave-In Conditioner vs Hair Serum: Which Do You Need?
- Bleached Hair Care: Washing and Conditioning Tips
- Hair Porosity: What It Is and Why It Matters
- Split Ends: Causes and Ways to Reduce Breakage
- Clarifying Shampoo vs Regular Shampoo: When Each Fits
Sources and further reading
Frequently asked questions
How often should I use a hair mask?
About once a week for dry, damaged or curly hair, and every two weeks or less for fine or healthy hair.
Do I use conditioner after a hair mask?
Usually you do not need to. If your hair still tangles after rinsing the mask, a small amount of conditioner on the ends is fine.
Can I leave a hair mask on overnight?
Only if the product is made for it. For most masks, the stated time is enough, and longer can leave hair heavy.