科学与环境

A plant-based hair dye that smells like cinnamon

来源: Phys.org - latest science and technology news stories · 发布于

A plant-based hair dye that smells like cinnamon
来源: Phys.org - latest science and technology news stories

Hair dyes help people express style and cover gray hair but often contain skin-irritating chemicals.

Hair dyes help people express style and cover gray hair but often contain skin-irritating chemicals.

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Cannabis was used as an intoxicant as early as 2,800 years ago
科学与环境

Cannabis was used as an intoxicant as early as 2,800 years ago

Cannabis is one of the most commonly used psychoactive plants today. However, it is difficult to determine archaeologically how cannabis was used in prehistoric times. Plant parts such as flowers, leaves and resins are perishable and therefore rarely survive. It is known that can

Phys.org - latest science and technology news stories ·