Journal
Phase Theory Baby Hair
February 22, 2026 · 6 min read

Welcome to an eye-opening exploration of sulfate-free shampoos and how they can revolutionize your hair care routine.
If you've ever wandered down the hair care aisle and noticed the 'sulfate-free' label, you might have wondered whether it's just marketing or if there's real science behind it.
Sulfates (particularly sodium lauryl sulfate) are extremely harsh cleansers that strip away the scalp's protective lipid barrier. They're cheap and effective at removing oil and dirt, which is why they're ubiquitous in commercial shampoos. But they're harmful to long-term scalp and hair health.
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Phase Theory Baby Hair
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