Will kelp supplements cause acne

I would recommend staying away from it. Reason being: it has a lot of salt which means it has iodides. Iodides have been linked to exacerbating acne. Here's a small list of some other items that can make acne worse:

Iodized Salt (1/4 tsp) - 100

Seasoned Salt - 40

Sun Evaporated Salt - 30

Uniodized Salt - 19

Meat/Poultry

Beef/Liver - 325

Turkey - 132

Seafood

Kelp - 1020

Cod (3 oz) - 87

Squid - 39

Crab - 33

Vegetables

Asparagus - 169

Broccoli - 90

Dairy

Cheddar Cheese Spread - 27

Milk - 11

Butter - 26

Mozzarella Cheese - 13

Miscellaneous

Tortilla Chips w/ salt - 80

Potato Chips w/ salt - 40