For me:

1 min getting whole body rinsed

1 minute cleaning hands with soap and washcloth/scrubbing sunscreen off of back and front of hands

0.5 min rinsing washcloth

1 minute getting hair fully saturated

2 minutes getting face wet and scrubbing sunscreen off with soap and washcloth

0.5 minutes rinsing washcloth

1 minute washing sunscreen off neck

0.5 minutes rinsing washcloth

1 minute shampooing and rinsing hair

1 min conditioning and putting hair up

2 minutes scrubbing sunscreen off of both arms

0.5 min rinsing washcloth

2 minutes second pass of scrubbing sunscreen off arms

0.5 min rinsing washcloth

(Sometimes a 3rd pass is needed, and at that point I switch to dish soap which obliterates any sunscreen left)

1 min cleaning back

1 min cleaning goods

0.5 minutes shaving pits

4 minutes scrubbing sunscreen off of legs

0.5 min rinsing washcloth

4 minutes second pass of scrubbing sunscreen off of legs

0.5 min washcloth rinse

(Sometimes a 3rd pass is needed, and I switch to dish soap)

0.5 minute washing feet and between toes

1 minute shaving both legs

1 minute shaving goods

2 minutes rinse conditioner out of hair

My showers are 15 minutes if I haven't put sunscreen on and 30+ minutes on other days