HOW LONG DOES THE HAIR SERUM LAST?
The longevity of the product depends on the area being treated in each individual case. If used correctly and applied to the whole scalp (once a day, approximately ten squeezes of the pump), a 120 ml spray bottle of the HAIR ACTIVATING SERUM, for example, should last for up to two months.
https://www.m2beaute.com/en/hair-care-faqs/faq-hair-activating-serum/how-long-does-the-hair-serum-last