A vehicle for herbal treatment on acne

My kids have entered the wonderful age of acne, and having super dry skin myself, this is something I don't really know how to deal with.

I'd like to leverage my herbal knowledge, but all the skin care products I've crafted in the past have been in oil + beeswax ointments: great for super dry skin but probably not what you want to smear on already acne-prone oily skin.

I'm assuming most of the skin healing herbs would be helpful: plantain, comfrey, yarrow. Lemon balm seems also beneficial specifically for acne, and my garden is full with it. But how do I actually get the herbs to the skin?

My first reflex is to make a tea, and then apply that with a face mask (reusable, of course) or just a washcloth after washing but before hydrating. It would, at the very least, reduce the temptation of disposable masks (teenagers *sigh*) but I'm not sure that a once-in-a-while facemask provides sufficient contact to make any lasting effect.

Other ideas?

One part apple cider vinegar and three parts water is good for acne.

Aloe vera is also a known solution.

There is also a PEP BB (Badge Bit) for dealing with acne and it has a video that might help:

https://permies.com/wiki/167896/pep-natural-medicine/Acne-PEP-BB-medicine-wood

Another great option is witchhazel. But, don't necessarily toss out the oils, either. While you'll want to avoid heavy oils and definitely coconut oil(because it's pore-clogging), other oils, like rosehip seed, grapeseed, & hazelnut are light oils, that will break down the excess oils of the skin, and cleanse it, they'll do so without drying out the skin. That's important, because when we strip the skin off it's natural oils, the natural reaction of the skin is to produce yet more oil.

The best way to do it is by 'oil cleansing'. Get tap water as hot as is tolerable on the face, and wet a face cloth, or better yet, a hand towel,  squeeze out enough water so it's not dripping, and hold it on the face for 3 - 5 minutes, to open the pores. Then, using just a little (less than a teaspoon) of the chosen oil, gently massage it into the face, with the fingertips, for a few minutes. Follow by wiping the excess oils off & *gently* exfoliating with the towel, and splash with cold water. This can be followed with a light spritz of rosewater, if desired.