I have had experience with Saniderm on 3 tattoos in the last few months,2 medium & one large,
I have the artist clean the tattoo right when it's done and apply it then ,with nothing on the tattoo except the saniderm,
& like was said I keep it on for at least 3 days,on my knee it was on for 4 days,the shit works great,I remove the film and use aquafor for a few days,then go to fragrance free lubriderm,
a day or 2 after I remove the film it's already doing the main peel,
I buy it directly from Saniderm | Keep it Clean. Keep it Simple. ,I get the 10" by 2 yards roll,it's $16.95 + $7 shipping for me(central cal),that way it covers large or whatever size pieces,I love the stuff !