Joico Defy Damage Heat & UV Hair Protectant

Last updated: August 14, 2023


Only a small drop once a day offers protection against the elements while also strengthening your hair and making it shiny. The formula is packed with vitamins and oils that serve the purpose of strengthening and shielding your strands. The bottle contains 1.7 fluid ounces of serum with an easy open and closed flip top.

Joico Defy Damage Heat & UV Hair Protectant

We looked at the top UV Hair Protectants and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best UV Hair Protectant you should buy.

Product Details

Key Takeaway: A blend of antioxidants, vitamins A and E and silica help strengthen the hair while also protecting it from heat and UV rays.

In our analysis of 12 expert reviews, the Joico Defy Damage Heat & UV Hair Protectant placed 1st when we looked at the top 8 products in the category. For the full ranking, see below.

From The Manufacturer

A true damage defense hero against the harsh effects of daily styling and exposure to UV and environmental pollution—helps prevent damage and guards against color fade for beautiful, vibrant, healthy-looking hair. Instant, daily protection from damaging heat, UV and environmental exposure. Apply small amount to damp hair prior to blow-drying and style as usual.

Expert Reviews


What reviewers liked

Color-safe. Adds shine. Repairs hair damage. Sulfate-free.
The shielding serum wards off heat, pollution, and UVA and UVB rays to protect from both environmental and heat damage. Its ultra-creamy formula is made of moringa seed oil, a protective lipid, and arginine, a bond-building molecule that builds shine and strength in your strands.

What reviewers didn't like

Can weigh the hair down.
View our UV Hair Protectant buying guide for in-depth advice and recommendations.

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