Because the real fun happens after the beach. Samples from ICBINP and AOM

Usage Note: In automatic1111 it often helps to weight the TE significantly higher than the UNet. try <lora:sunburn_tanline_v1:0.6:1.6> if it isn't coming through enough

NOTE: This Lora (and especially the sunburn color) does not play nice with a lot of common 'gloss' prompts to improve photos since part of what those keywords do is neutral color correction. Start without gloss keywords and add them back to figure out which ones don't wreck it.

Main keywords are 'tanlines' and 'sunburn'

Starter prompt:

photo of a woman with tanlines from a sunburn <lora:sunburn_tanline_v1:1.0>

a woman with tanlines from a bright red sunburn<lora:sunburn_tanline_v1:0.8:1.4>