Olaplex
Nº.9 BOND PROTECTOR NOURISHING HAIR SERUM
Seeing dull hair, tangles, or poor style retention? These could be signs of pollution or heat damage. Protect your hair from daily damage with this weightless, leave-in, silicone-free hair serum to shield hair from pollution for 48 hours and provide heat protection up to 450°F (232°C).