Aside from known injuries to your lower back, you often stand for long periods and may be wearing incorrect footwear. You may also spend loads of time leaning forward with your arms outstretched.
You may be clenching your teeth, holding your head in uncomfortable positions for long periods of time with poor posture or holding your arms up cutting hair.
You spend long days bent over helping your clients. The forward head position and slump at the chest cause extreme forces through your neck and upper back. Also standing in incorrect footwear makes your body work harder to maintain good posture.