Does anyone have any remedies to share for treating constant breakouts?

Ivory soap. It’s a non scented soap and it’s natural. I use it for my face. I’ll soak my face and scrub my face until I hear a squeak and then rinse. Do not buy into commercialized products. They do not work.
To your update: yes it’s the brand name. The last time I bought it from the grocery store, it was only like $2 a pack.
Food is one of the primary contributors to fluctuating or increased hormone levels in our bodies which could cause a breakout. The typical American diet is high in saturated fats, processed grains, meat fats, and refined sugar. It is also low in fresh vegetables, fruit, fish, fiber, and antioxidants. Therefore, a healthy diet is one form of natural treatment. Personally I subscribe to the Budwig diet -- you'll feel like a new person when you eat only whole foods.
It's likely excess hormones. She will need to see a doctor and get contraceptive and regulator for it.
Tell her that if she doesn't deal with it now, then she'll deal with the pockmarked scars of those zits instead, later in life.
Lay off the products, most of them will just irritate the skin and make it worse. Have a word with your doctor, tell him what you've tried. Spots are caused by bacteria so antibiotics should help.
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Try mixing olive oil, honey, and lemon juice and apply it on her face 3 times a week.
I had issues with soap causing problems as an adult. I have many allergies. I tried many and found something that worked for me. I use Charcoal Goats Milk soap.
Drink a lot of water
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