As the old adage goes, ‘Variety is the spice of life.’ It’s human nature to want to try new things, and the allure of something unknown is undeniably exciting. But at a certain point, those thrills become cheap, or even...
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The skincare market is a jungle full of brightly colored berries. Some of them are poisonous, most don't do anything at all, and a select few can be incredibly nourishing. In a market like that, finding those nourishing berries can...
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If we had to pick our two favorite skincare ingredients, retinol and vitamin C would be the obvious answer. They’re the stars of the Protocol product range for a reason! Both are incredibly well-researched, with a multitude of skin-transforming benefits...
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Skin purging is a bittersweet phenomenon. It’s a “necessary” breakout that can occur in the weeks or months after you’ve started using a skin-renewing product. It’s better to know a purge might be coming before you start a potent retinoid...
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Have you ever noticed that your budget-friendly retinol cream is a little yellow? Or, if you tried our Enzyme-Active Retinol Serum, you’ll have noticed a very vibrant orange tint. What on earth is that color about? Simple - that’s just...
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