Macadamia deep repair masque is a revitalizing hair reconstructor for dry, damaged hair. a combination of macadamia oil and argan oil along with tea tree oil, chamomile oil, aloe and algae extracts rejuvenate and rebuild the hair, leaving the hair deeply nourished for improved elasticity and shine with long-lasting conditioning benefits. Number on the bottom of the Jar is a batch number stating the date the product was manufactured this is not an expiration date. The product expires 4 years after manufacture date.