Yeah, I’ve also experienced slow hair growth on my scalp, and sadly, the volume has decreased from what it was when I was a teen. But it’s true that caring for your hair and trimming it can increase growth. Every time I pamper my hair, there’s always a positive result in growth, but not in volume, lol! two products shows great result, one is rosemary essential oil and second is castor oil, These two truly give results.