This book highlights the potential of biomass for cosmetics applications. It covers the discussion on biomass as a source for cosmetics from savanna, marine and tropical forest, trend and market outlook of biobased cosmetics, active substances from biomass for cosmetics, extractives from biomass for cosmetics, other non-wood forest products such as essential oil, tengkawang, and bee pollen. Besides that, the potency of biopolymers such as lignin, and polysaccharides are presented. The book also discusses activated carbon as a cosmetic source. To present more comprehensive information, it covers biomass as anti-aging, anti-acne, sunscreen, anti-melanin, and antimicrobial. Regarding the close contact system with the human in daily life, cosmetic needs to comply with the human system. Therefore, one special chapter is dedicated to presenting the compatibility view of biobased cosmetics in the human body system. Nanomaterials in cosmetics have started to be used by many beauty companies asindicated by nano-related patents. The nanotechnology applications in cosmetics also provide future trends in bio-based cosmetics. Some forms of nanomaterials that have been reported include liposomes, nanoemulsion, nanocapsules, solid lipid nanoparticles, nanocrystals, nano-silver, nano-gold, hydrogel, etc. Iodinated Aloe Vera formulations within polymeric complexes present examples of bio-antimicrobials and such compounds are at the crossroads between pharmaceutics and cosmetics. Finally, the environmental and safety impacts of biobased cosmetic development are discussed as the closure in the last chapter. This book is expected to provide insightful information for those dealing with biomass or doing research on biomass for sustainable living. Moreover, it is also suitable for policymakers to get the new and latest information on valorizing local biomass while expanding its usage for cosmeceutical purposes. Due to the current environmental problems occurring in our surroundings, this book is seen to be an important tool to spread awareness of the smart way of utilizing our precious biomass and transforming it into valuable products.