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Biomaterials

Bolt Threads and Ginkgo Bioworks collaborate on cosmetics

by Craig Bettenhausen
August 7, 2021 | A version of this story appeared in Volume 99, Issue 29
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Most Popular in Materials

A person weighs an off-white powder near some cosmetic sample jars.
Credit: Bolt Threads
A technician prepares cosmetic samples using Bolt's b-silk protein.

Bolt Threads is scaling up its b-silk protein, a cosmetic ingredient, beyond the metric-ton scale with help from the synthetic biology heavyweight Ginkgo Bioworks. Bolt makes the powdered protein using genetically modified yeast and sells it in small quantities as a premium replacement for silicone and keratin that also offers some protection against pollution and ultraviolet radiation. With Ginkgo’s expertise in strain improvement, Bolt aims to reduce the cost of producing b-silk so that the matierial can compete on the mass market.

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