In the typical form of scalping, you risk one point to gain one point in each trade.
The risk of each trade is smaller. It is unlikely you will experience a large loss.
Scalping is neither more, or less risky than other trading styles.
The choice of broker matters the most in scalping. I use FP Markets which has lower spreads, commission and slippage.
FP Markets have the fastest execution, where as in scalping execution is also a main factor, cause you need to exit quickly.