LÉ Blog
Is petrolatum bad for skin?
Petrlatum is an ubiquitous skincare ingredient perhaps popularized by good ol’ Vaseline. As common and historied as it is, it’s also one that often finds itself on top of many “dirty” lists. The two main reasons you might hear about petralatum nay-sayers are “it’s a carcinogen” and “it’ll clog your pores!”. These are some pretty serious accusations! But, as cosmetic chemists who have worked with petrolatum in formulas for years, we can say that these claims are not nearly as scary as they sou...
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How much niacinamide is too much niacinamide
As a skincare enthusiast, you’ve probably already heard of the irritation potential of heavy-hitting active ingredients such as retinol and glycolic acid. Niacinamide, on the other hand, gets touted as a highly efficacious yet vanilla, and gentle ingredient. But! When it comes to any ingredients, dose makes the poison… and the elixir. Most active ingredients have a tested effective range. Within that range, the ingredient should deliver those long-term benefits they promise without causing in...
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