Microalgae are photosynthetic organisms that produce valuable metabolites as a result of being constantly exposed to stress conditions such as high or low temperature, high salinity, osmotic pressure, photo-oxidation, and ultraviolet radiation. These valuable metabolites drew attention from cosmetic and cosmeceutical industries to be used in anti-aging, sunscreen, and skin whitening products. Microalgal secondary metabolites can have anti-blemish or anti-microbial effect; can also repair and heal skin, protect skin from UV damage, and prevent inflammation. Existing cosmetic products can be replaced by microalgae derived cosmetic products which are environment-friendly and safe which make them publicly important since people want to have products as natural as possible. Currently some microalgal derived products are commercially available and biotechnology of microalgae is getting more and more developed every day which will be resulted in more commercial products in short period of time. This review highlights the potential of microalgae species and, bioactive molecules derived by them in trending natural cosmetics with a special emphasis on application areas and production steps.

微藻是光合生物，由于不断地暴露于诸如高温或低温，高盐度，渗透压，光氧化和紫外线辐射等胁迫条件下，会产生有价值的代谢产物。这些有价值的代谢物引起化妆品和药妆行业的关注，可用于抗衰老，防晒霜和皮肤美白产品。微藻次生代谢产物可具有抗斑点或抗微生物作用；还可修复和治愈皮肤，保护皮肤免受紫外线伤害，并防止发炎。现有的化妆品可用微藻衍生的化妆品替代，这些产品环保且安全，这使它们在公众中变得重要，因为人们希望拥有尽可能天然的产品。当前，一些微藻衍生的产品是可商购的，并且微藻的生物技术每天都在发展，这将在短时间内导致更多的商业产品。这篇综述强调了微藻物种及其衍生的生物活性分子在趋势化天然化妆品中的潜力，并特别强调了应用领域和生产步骤。