GSH HEAD SPA
(GSH: Glossy Shiny Hair)
The surface of your hair reflects light. If the surface is rough, it diffusely reflects light, making it harder to make hair look shiny.
You can get glossy, shiny hair by
smoothening the surface of your hair so that it reflects light beautifully (i.e., by moisturization with Nano Steam + Glossy Shine Hair Spa) and by relieving the torsion of your hair (i.e., by Straightening, Keratin Treatment, etc.).
Glossy Shine Hair Spa (Nano Steam + Glossy Shine Treatment) alone is enough to get shinier hair. However, if you have naturally very curly hair or have tortuous hair caused by damage or otherwise, you might need straightening.