Category: <span>Technology deep dive</span>

• Fermentation and Encapsulation: Real Technology or Just Good Copywriting?

  Two words that appear on half the products in a K-beauty haul. Both describe real processes; neither guarantees a better product. Here is how to tell them apart.

• Spicule Serums and Reedle Sticks: How They Work, and Who Should Avoid Them

  Marketed as microneedling in a bottle, spicule serums are neither as dramatic nor as harmless as the name suggests. Here is the mechanism, the tingle, and the skip list.