Keratin treatments are often referred to as Brazilian Keratin Treatments or BKT for short. The term describes a fairly wide range of products that have one common theme: topical smoothing of the hair using heat bonded protein to fill gaps and reduce frizz.
Express treatments are better for fine hair as there is less reduction to volume. Full treatments work wonders at reducing bulky hair. The best option is always to have a thorough consultation with your personal stylist.
Some talking points for a great consultation are:
-Pre-existing color processes
-Current washing schedule and styling routine
-Curl pattern and reduction that you want
-Volume or bulk ratio