If you mean super potion, buy it at the store. If you mean SpecialPotion to heal Amphy, Cianwood city across the ocean.
No, you can not go to Potion Ocean unless you are a paid Moshi Member. Going to Potion Ocean is part of the Super Moshi Mission: Voyage Under Potion Ocean Season 1 Mission 2.
There is no way to heal it unless you have a Splash Potion of Healing/Regeneration. Although there is a rumor that you can heal it by feeding it fish after you tame it.
Any drugstore like Walgreen's in Massachusetts sell Ocean Potion sunscreen.
A great place to buy ocean potion ever glow is at your local drugstore, such as london drugs or you could go to find the ocean potion ever glow you are looking for on sites such as amazon.
Mega potion
Lotion Motion Ocean Potion
if you beat the elite four, you will go on to face N, who defeated the champ alder. before you battle N, he will heal your Pokemon for you. before you battle him, you will also get a chance to battle zekrom and catch it, and you can put it in your party. i would recommend putting it in your party since it has a super effective move against reshiram, which N starts with.
Potion Oceon is somewhere really exclusive! With an Arby's code, you can get The Black Pearl of Potion Ocean.
Soothing Your SunburnUse ice-cold towels - this draws out the heat from the sunburn and soothes the painTake an Advil to minimize the pain
Moderately burned skin should heal within a week. While the skin will heal after a sunburn, the risk of skin cancer increases with exposure and subsequent burns. Even one bad burn in childhood carries an increased risk of skin cancer.
MotionLotionNotionPotionDevotionCommotioncommotionSpelling isn't that much alike but if you say it, motion sorta works... Sorry its not the best answer :/