Hair Academy · Lesson 001

Why does blonde hair turn yellow?

Blonde hair often has natural warmth underneath. As cooler tones fade, that warmth can become more visible.

Macro view of warm tones within dimensional blonde hair
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The simple answer

Warmth is normal. Your routine can make it more noticeable.

Washing, sunlight, frequent heat, minerals in water, and product buildup can all affect how blonde looks over time.

Try this

  • Choose gentle care made for colored hair.
  • Protect hair from strong sun and high heat.
  • Use purple shampoo only when yellow tones appear.
  • Ask a color professional when warmth is strong or uneven.

General cosmetic hair-care education. Individual hair and color history vary.