Atlas SUNTEST xenon arc instruments are the global standard for lightfastness and photo stability testing of cosmetic products by the largest manufacturers and their suppliers.
Pigments and dyes can fade, and ingredients such as oils can degrade when exposed to light, both to artificial light and direct or indirect sunlight. This can happen while being worn, such as hair dyes, and, in some cases, while still in retail packaging on a store shelf. Color fade, hue shift, off-odor or ingredient degradation can result in negative customer acceptance and damage brand reputation. And, importantly, “cosmeceutical” items with biologically active ingredients, such as anti-aging products, can lose efficacy.
Therefore, lightfastness and photo stability testing of both the cosmetic as well as in the market packaging is necessary.
Sun Protection Factor (SPF) in vitro testing of sunscreens is also performed with the SUNTEST.