Scritching/scalp massaging however, when done correctly are beneficial to the hair AND scalp because they promote scalp circulation which can prevent/treat dry scalp, dandruff and actually promote hair growth.
So I'm going to try my first pictorial (I get a kick out of saying that, pictorial...LOL) to show you all how to scritch/scalp massage
What you'll need:

a metal-less ponytail holder (yes all of mine are stretched out of shape...LOL.. I have a lot of hair)
You can use any of the following 2 items to scritch... I have seen some articles that advocate using a paddle brush with the ball tips but I would not recommend that because it will tangle the hair which will inevitably lead to breakage

a rattail comb

scalp massager (can be bought for about 2 bucks at any BSS)
Steps:
1st pull your hair back in a low ponytail... if your hair is ear length or shorter then brush it all back in one direction


If you're using a rattail comb, push the tail end of the comb through your hair in a zig-zag, back and forth motion


If using the scalp massager, just work in a circular motion until cover your entire head


I usually scritch for about 10 minutes a day 3-4 days a week
Happy Hair journey !!!