Can duochrome nail polish become monochrome over time?

Missionista must know…I have a couple of (Sephora) duochrome nail polishes. One shifts from lavender to grey, and the other from hot pink to orange. Lately, I’ve noticed less shift in the colors. The lavender one has lost almost all the grey, and the pink is much less orange. Can duochrome polishes become monochrome over time? Am I just hallucinating? The Beauty Brains respond Mon0-Chrome? Duo-Chrome? Personally, I prefer Safari. But enough with the bad browser puns. How do DuoChrome polishes work? As usual, the first thing we do when faced with a question like this is take a look at the ingredient list for clues about what might be happening. Strangely enough, when we looked at the ingredient list on Sephora’s website we noticed that they don’t list any colors for these nail polishes. (See below.) We even paid a visit to our local Sephora to find a bottle but we couldn’t find any of their duochrome polishes. Since we can’t tell which specific duo-colorants Sephora is using, we’ll have to take a small leap of faith here and assume that their technology is similar to that used in other duo color products. For example one chemical supplier, Kobo Products Inc., sells a line of iridescent effect pigments that are based on Synthetic Fluorphlogopite (and) Silica (and) Titanium Dioxide). The particle sizes of these pigments range from 30 to 120 microns (which is our clue to what may be changing.) These pigments consist of multiple layers of tiny “sheets” that can ...
Source: thebeautybrains.com - Category: Consumer Health News Authors: Tags: Problems Source Type: blogs