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Sulfate vs. Sulfate-Free Shampoos: What’s the Big Deal?

Walk into any beauty aisle, and you’ll likely see shampoo bottles screaming “SULFATE-FREE!” like it’s the most important thing since sliced bread. But what’s the deal? Are sulfates really that bad? And if they are, why are they still in so many shampoos? Let’s break it down.

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What Are Sulfates, and Why Are They in Shampoo?

shampoo. Wash hair.
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Sulfates are powerful cleansing agents, also known as surfactants. The two most common types found in shampoos are sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES). They’re responsible for that rich, foamy lather that makes your hair feel squeaky clean.

Sulfates work by attracting both oil and water, helping to wash away dirt, grease, and product buildup. They’re effective, inexpensive, and have been used in hair care for decades. So why do some people avoid them?

The Downsides of Sulfates

comparing shampoo bottles.
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For all their deep-cleaning power, sulfates can be too harsh for some hair types. Here’s why people might want to skip them:

They Can Strip Natural Oils

Oh No.
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If you have dry, curly, or color-treated hair, sulfates may leave your hair feeling parched.

They May Fade Hair Color Faster

Faded hair color.
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Since sulfates remove oils so effectively, they can also pull out the color molecules from dyed hair, making it fade faster.

They Can Irritate Sensitive Scalps

scalp irritation.
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If you struggle with dandruff, eczema, or scalp sensitivity, sulfates might be making things worse by stripping moisture and causing irritation.

They Can Make Hair Frizzier

Frizzy hair.
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For those with curls or waves, sulfates can rough up the hair cuticle, leading to unwanted frizz.

Do Sulfate-Free Shampoos Really Preserve Color?

Washing hair. shampoo.
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Yes! If you dye your hair, using a sulfate-free shampoo is one of the easiest ways to help your color last longer. Because these formulas are milder, they don’t strip away as much of the color molecules. Many color-safe shampoos are also sulfate-free for this reason.

That said, some sulfate-free shampoos still contain other detergents that can be a bit stripping, so always check the ingredients if color longevity is your main concern.

Who Should Use Sulfate-Free Shampoo?

Shampoo hair wash.
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Sulfate-free shampoo isn’t just a trend; it actually benefits certain hair types more than others. You might want to consider one if:

  • You have curly, wavy, or textured hair that needs extra moisture.
  • You color your hair and want to keep it vibrant.
  • You have a sensitive scalp that’s prone to irritation.
  • Your hair tends to get dry or frizzy with traditional shampoos.
  • You’re trying to transition to a more natural hair care routine and want fewer harsh chemicals.

On the flip side, if you have an oily scalp or use a lot of styling products, a sulfate-free shampoo may not give you the deep cleanse you need. Some people with fine, straight hair also find that sulfate-free formulas leave their hair feeling limp or greasy.

Are There Sulfates in Conditioner?

No sulfates.
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Typically, no. Conditioners don’t usually contain sulfates because they’re not designed to cleanse; they’re meant to moisturize and smooth the hair. However, some lower-quality conditioners may have surfactants or other ingredients that could be drying or irritating. If you’re avoiding sulfates completely, it’s always a good idea to scan the ingredients list.

Do Sulfate-Free Shampoos Lather?

Shampoo wash hair.
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One of the biggest complaints about sulfate-free shampoos is that they don’t lather as much. That’s because sulfates are responsible for that big, bubbly foam. But don’t be fooled—lather isn’t necessary for cleaning. Sulfate-free shampoos still remove dirt and oil, just in a gentler way.

Give Them A Try!

comparing shampoo bottles.
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If you’re switching from a regular shampoo to a sulfate-free one, give it a few weeks. Your scalp needs time to adjust, and you might notice less oil production over time.

The Verdict: Should You Go Sulfate-Free?

Hair stylist.
Unai Huizi Photography via Shutterstock.

It really depends on your hair type and needs. If your current shampoo works fine and your hair feels healthy, there’s no urgent need to switch. But if you’re dealing with dryness, frizz, scalp irritation, or color fading, a sulfate-free shampoo could be a game-changer.

The best way to find out? Try it! Hair care is personal, and what works for one person might not work for another. Whether you stick with sulfates or go sulfate-free, the most important thing is to find a shampoo that makes your hair feel its best.

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How to Wash Your Face Correctly for Your Skin Type and Healthier Skin

woman washing face.
puhhha via Shutterstock.

Washing your face might seem like the most basic step in your skincare routine—splash on some water, rub in a little cleanser, rinse, done. But ask any dermatologist, and they’ll tell you that how you wash your face can make or break the health of your skin. Whether you’re dealing with dryness, oiliness, sensitivity, or just trying to maintain a healthy glow, the method and products you use matter more than you might think. Here’s how to wash your face the right way—and what to change depending on your skin type.

READ: How to Wash Your Face Correctly for Your Skin Type and Healthier Skin

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Author

  • Dede Wilson Headshot Circle

    Dédé Wilson is a journalist with over 17 cookbooks to her name and is the co-founder and managing partner of the digital media partnership Shift Works Partners LLC, currently publishing through two online media brands, FODMAP Everyday® and The Queen Zone.

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Last update on 2025-05-13 / Affiliate links / Images from Amazon Product Advertising API

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