Bumble and bumble Thickening Serum ($26) is the brand’s first ever overnight treatment, and it works over time to increase the diameter of individual hair strands while strengthening them. The serum joins the ranks of Bb’s highly effective Thickening Spray, a longtime BBJ fave for fattening up strands and extending your blow-out by DAYS. I’m trying it out soon and will report back, lest you worry.
Bumble and bumble Thickening Serum is sold at bumbleandbumble.com.
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