Why is keratin banned?
High levels of formaldehyde used in the hair straightening treatments have caused concern, both for stylists and their clients, and in some places, the treatments have been banned, regulated or reformulated. Several keratin-based hair-smoothing and hair-straightening products marketed to women contain formaldehyde.May 8, 2024
High levels of formaldehyde used in the hair straightening treatments have caused concern, both for stylists and their clients, and in some places, the treatments have been banned, regulated or reformulated. Several keratin-based hair-smoothing and hair-straightening products marketed to women contain formaldehyde.May 8, 2024