Lack of vitamins C, D, E, K and a host of them will have evidence on your skin when you don't include them in your diet or take the supplements and you know this can ‘spoil your market’

Diet plays a big role in our appearance, most of the expensive supplements we get can easily be gotten naturally. (Only problem is that we want 'sharpsharp'.
All skin conditions can be linked to a vitamin deficiency, see some of them and more on the blog (link at the bottom)

What Vitamin(s) you are lacking
Acne (Pimples)
A, C, E, B2, Niacin, Biotin, Zinc
Prickly Heat Rash
Asides the obvious heat if this is persistent, you might be lacking Vitamin C
Dry Skin
A, C, EFA
Oily Skin, White heads
B2
Scaly Eczema
B2, Good fats
Stretch marks
E, B6, Zinc

This does not totally replace seeing a professional though, if you notice a more serious or persistent condition on your skin.

What other skin conditions will you want to find more info about?

Foods/Vegetables and Fruits for your vitamins

Vitamins
Foods/Fruits/Vegetables
A
Eggs, Shrimp, Mangoes, Sweet potatoes, Carrots, Leafy Vegetables (spinach, ugu leaves, green)
B2 (Riboflavin)
Asparagus, Almonds, Grains, Liver, Kellogg’s All Bran Flakes J , Milk, Yogurt
B6
Meat, Fish, Chicken, Avocado, Bananas, Watermelon, Potatoes, Carrots, Liver
B12
Chicken, Eggs, Fish, Tuna, Liver, Soybeans, Cooked clams

More info on the blog
http://allavosiyatalk..com/2015/10/your-skin-is-snitching-on-you.html