WWX never wears sunscreen. He's too forgetful for it and, frankly, not enough into self-care to actually remember to do something that only benefits him. He also tans easily and rarely gets a serious sun burn, so it works out okay for him.
LWJ meticulously applies sun screen everytime he leaves the house. In mid-summer, he adds 3 extra steps to his already 17-step skin care routine. He also burns very easily, but hasn't gotten a sunburn since he was 6 years old because he's so responsible with applying sun screen and avoiding direct sun.
Teen!WWX used to tease teen!LWJ about his sunscreen and avoiding the sun, while simultaneously complimenting teen!LWJ on his flawless skin. LWJ tried to educate WWX on proper skin care at which point WWX suggested LWJ should apply it for him if he cared that much. LWJ told him "Shameless!" and "Ridiculous!" and stormed off.
Adult!WWX tried to tease adult!LWJ the same way before they got together and LWJ just said okay and took real good care in applying the sunscreen for WWX. It's been the first time in many years that WWX was this red in the sun.
My very best friend finally had the balls to post her work and it deserves love. If you’re a fan of MDZS/Mo Dao Zu Shi/The Untamed you won’t regret reading her beautiful, modern addition to the fanfic community!!!!