#14- Why does your procedure and aftercare instructions differ from my previous stylist's?
Every
  stylist develops their own technique on most services in the salon. It
  doesn't necessarily mean different chemicals are used. Chemical 
services  usually come with a "how-to" instructional, but those are 
basic  guidelines that can usually be tweaked in order to customize the 
 service. This goes for color, hair cutting, styling product 
application,  perms, chemical straightening...etc
Below is a  list of things I do, that are NOT a part of any companies "how-to"
  instructions, and therefore can confuse clients/stylists:
1.I wear a  respirator. Not one company instructs a stylist to wear a 
respirator. 
2.I let the product  sit for about 20 minutes before blowdrying.
3.I encourage the use of a respirator for the client. This is not recommended by any brand. It is done as a courtesy.
4.Clients  with long hair are put under the dryer while I simotaniously 
blowdry  the ends, in order to dry the hair faster. This might cut 
drying time in  half, which saves time and keeps cost down. No company 
recommends  putting the client under the dryer.
5.Ponytails, headbands, hats  etc.... are typically forbidden by every 
company, before the first wash.  However, we've found that absolutely 
none of those things has left an  impression in the hair, with any brand
 we've tried. All we recommend is  that the client smooth their before 
bed, and upon waking, and avoid all moisture and products.
6. A selling point for all  companies is that color can be done before a SP-S, on the  same day. This is true. No damage will occur.
 However, we've seen, a  sometimes dramatic, difference in how a color 
might change up, if it's  done the same day VS. a week before SP-S. If a
 client waits a week  between color and SP-S, that seems to keep some
 color from lifting or  going too brassy. Sometimes the week wait makes 
no difference, but most  of the time, it makes a noticeable difference.
7. All companies  claim to be the best, and all companies only recommend 
their own at-home  hair care products. We have tried most of the brand 
specific hair care  products and have found that they don't really make a
 difference, or  extend the life of SP-S. Therefore, we 
don't sell them.  This makes people think that we are using some off 
brand that does not  have their own hair care products, which is 
incorrect.
There are probably more items of confusion. But, I'm sure you get the drift ;)