I have somewhere around 15 safety razors and 25 straight razors. The safety razors include open comb and safety bar, DE and SE with both AC blades and Schick injector blades, Aggressiveness range from a very mild Weishi/VDH TTO to the Muhle R41. \
When shaving multiple day's growth, I generally do my first pass with a moderately aggressive open comb razor (Parker 25C) to knock down the growth. A straight razor is also good for this purpose. Then to protect my sensitive skin, I switch to safety bar razors with moderate aggression. Finally, I do a clean-up pass with the mild Weishi/VDH TTO equipped with a super sharp blade such as a BIC Chrome Platinum or Nacet. That allows me to get a near BBS shave without irritation.
Of course, a superb lather is required to make this possible if you have sensitive skin. I would think that after a bout with chickenpox that you skin would be quite easily irritated.
When shaving multiple day's growth, I generally do my first pass with a moderately aggressive open comb razor (Parker 25C) to knock down the growth. A straight razor is also good for this purpose. Then to protect my sensitive skin, I switch to safety bar razors with moderate aggression. Finally, I do a clean-up pass with the mild Weishi/VDH TTO equipped with a super sharp blade such as a BIC Chrome Platinum or Nacet. That allows me to get a near BBS shave without irritation.
Of course, a superb lather is required to make this possible if you have sensitive skin. I would think that after a bout with chickenpox that you skin would be quite easily irritated.