St. John's Wort in in seed now, and since it is sunny & warm out still, it is a great time to harvest some.
I usually strain out the flowering heads from the tinctures I have made, and then add the seed heads, to double tincture it. So you are using the same alcohol.
I also infuse several quarts of oil with St. John's wort flowers & seeds heads to use in skin products. That's basically all I use as moisturizer.
And put some up in apple cider vinegar too for use as a mouth wash, it is very healing to the gums & strengthens them. You can also use this vinegar on skin problems.