You have debeloped irritant contact dermatitis
due to hot wax.
Apply mild steroid with antibiotic.. Like eumosone G cream.
Take a short course of steroids
Avoid make up to cover it.
Keep the area protected from sun.
You may improve in 2 to 3 weeks.
Reddness will go away , but pigmentstion may follow and may remain for few weeks.. No treatment is needed.
I hope you got my answer.
Dr. Ilyas Patel MD