The Associative Laws say that it doesn't matter how we group the numbers (i.e. which we calculate first) ... ... when we add : (a + b) + c = a + (b + c). ... or when we multiply : (a Ã b) Ã c = a Ã (b Ã c).
To complete the PCT in two months (or less) you will need to average approximately 43.6 mi / 70.2 km per day (this was my longest day on trail).
The PCA peels vary from 1-3 days of light flaking and slight redness. The surgeons peel requires an ointment to be used on the face continuously for 10 days and no makeup can be worn for 14 days.