Silicones are unmatched for delivering that luxurious 'peach skin' feel and smooth product application. Yet, they're often criticized for poor biodegradability and potential pore-clogging. The truth depends on the specific molecule—over 50 varieties exist, varying in occlusivity based on type and concentration in the formula. Without detailed ingredient breakdowns, it's hard to evaluate. The good news: Today's advanced formulations mean most silicones have minimal impact on the skin's epidermis.
Parabens, the gold-standard preservatives, strike an ideal balance of efficacy and quality. They're flagged for possible allergenicity and endocrine disruption risks. Not all are equal—long-chain types (like ethyl- or propylparaben) draw the most concern, while short-chain methylparabens are generally milder. Paraben-free options rely on alternatives with less long-term data, some facing bans themselves, such as highly allergenic methylisothiazolinone.
Insights courtesy of Lionel de Benetti, cosmetologist and Kiehl’s consultant, and Cyrille Telinge, founder of Novexpert.
