Hair Care Guide

The hair cycle can be described through the core anagen, catagen and telogen stages, with exogen often separated as the shedding phase. Learn what each stage means, how telogen effluvium...

The scalp is skin, but it is not identical to facial skin. This guide explains how barrier, microbiome, sebum and pH concepts can be adapted to scalp care—and where the...

Oily scalp does not have a single cause. This guide explains sebum production, the role of Malassezia and the scalp barrier in visible dandruff, and what sulfate-free and salt-free shampoo...

Dandruff is not explained by dry scalp or Malassezia alone. This guide examines how sebum, the scalp barrier, inflammation and microbiome changes relate to visible flaking.

Sulfate-free and salt-free shampoo are not the same concept. This guide explains the difference between SLS/SLES, Sodium C14-16 Olefin Sulfonate and Sodium Chloride, and how those terms apply to the...

A realistic night routine for shedding-prone hair: accurate hair-cycle science, consistent scalp care, peptide-based leave-on serum use and guidance on when to seek dermatological evaluation.

The correct Mirissa Lab scalp-care order is simple: cleanse and rinse with shampoo first, then apply the leave-in serum to a clean, dry or slightly damp scalp. This guide follows...

The scalp is an ecosystem shaped by microorganisms, sebum, barrier function and immune responses. This guide explains the scalp microbiome, Malassezia, pH and scalp care through a current scientific lens.