A typical tip for a hair stylist at Christmas would depend on several factors such as the quality of the service, the price of the service, and the relationship between the stylist and client. A common range for a tip could be anywhere from 15-20% of the total service cost. If you are a regular client of the stylist and have built a good rapport with them, it's appropriate to tip higher than the standard amount. Ultimately, the decision is up to you based on your satisfaction with the service provided.