Ask an Eye Doctor and Get an Answer ASAP
This is Dr. David
I am sorry you got shampoo in your eye.
best thing is try your best to wash out your eye with water in the shower
rinsing water in your eye gently as best as you can is the best way to wash out the shampoo and help the redness.
the redness will get better with time
your eyes can also make tears to wash themselves out and to wash out irritation.
not stinging is a good sign.
let me know if you have questions.