White carbon black: the "nanobeautician" in the field of daily chemical industry
From toothpaste to cosmetics, from food packaging to hygiene products, white carbon black has become a key material for upgrading the daily chemical industry due to its non toxicity, high dispersibility, and biocompatibility. Its nanoscale particle size (10-100nm) and surface active groups make it irreplaceable in the fields of friction agents, thickeners, and adsorbents.


Oral Care: The 'Invisible Skeleton' of Transparent Toothpaste
Traditional toothpaste friction agents mainly use calcium carbonate, but there are problems such as rough particles and damage to tooth enamel. White carbon black can achieve a balance between mild abrasion and efficient cleaning by controlling the particle size distribution (D50<5 μ m) and surface hydroxyl density. More importantly, its refractive index (1.45-1.50) is highly matched with the toothpaste matrix, allowing transparency to be maintained even when the dosage reaches 20%, meeting consumers' dual needs for "appearance" and efficacy. Currently, four out of the top five toothpaste brands worldwide use white carbon black as their core friction agent.


Cosmetics: From "Soft Focus" to "Intelligent Delivery"
In the field of cosmetics, white carbon black disperses the powder evenly through the "ball bearing effect", forming an optical soft focus film that hides pores and fine lines. For example, an international brand of air cushion BB cream added 3% vapor phase white carbon black to improve the concealer force by 25%, while maintaining a thin and breathable feeling. In the field of skincare, mesoporous white carbon black (pore size 2-50nm) can be used as a drug carrier to achieve sustained release of active ingredients such as vitamin C and retinol, prolonging the efficacy of skincare products by more than three times.


Food Packaging: From "Preservation" to "Antibacterial"
White carbon black based composite materials can selectively adsorb corrosive substances such as ethylene and water by regulating their pore structure, thereby extending the shelf life of fruits and vegetables. For example, adding 5% white carbon black PE film can extend the shelf life of strawberries from 3 days to 7 days. More cutting-edge research has loaded silver nanoparticles onto the surface of white carbon black to develop a food packaging film that combines breathability and antibacterial properties, with an inhibition rate of 99.9% against Escherichia coli.