I think you should feel lucky <| sep |> Depending on fabric I either tea dye then shove in the cooker for a good ten fifteen minutes whilst keeping a very close eye on it . You ' ll get that slight brown tinge on light clothes and the cooker will make a couple holes with burn marks . Depending on location of your apocalypse you can use gold spray dust from afar for a little dusting to make it the clothes look like they have sand on . Sandpaper will roughen up everything to a level you ' re comfortable with . You can fray edges , weaken clothes by burn holes etc . Finally you can go for acrylic paints black , browns , reds . You ' ll want to mix a bit so everything looks suitable but quick brush movements and a bit of practice you ' ll be able to get an idea of what to do . You can watch some tutorials on YouTube but you ' ll know how much wear you want . If you dont want to use paints you can use earthy eyeshadows to the same effect . After finishing with eyeshadow , spray the clothes with hair spray to keep the eyeshadow on . I ' ve also seen people rub vaseline near the neck and arm pits for a sweaty look . I haven ' t tried that out yet but it might be something you want to look at !