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8 articles
Most skincare products are emulsions — combinations of oil and water that naturally want to separate but are forced to stay together through formulation chemistry.
Salicylic acid is ubiquitous in acne products, usually with the tagline about unclogging pores.
Preservatives have become skincare villains — ingredients to be avoided, marketed against, and feared.
Vitamin C is one of the most researched skincare ingredients — and one of the most confusing.
You wouldn't drink milk a month past its expiry date. Yet many people use skincare products months or years after they've degraded, assuming they're still…
Skincare products come in many formats: watery serums, rich creams, pure oils, lightweight lotions, thick balms. These aren't interchangeable delivery systems.
"Apply products thin to thick" is standard skincare advice. But the more useful principle involves solubility — understanding which ingredients dissolve in water…
Every skincare ingredient exists in a chemical environment, and that environment's acidity — its pH — can determine whether an active ingredient works brilliantly…