You could make a decoction (strong brew) of Witch Hazel (the herb) and use it as a toner. I guess you could also infuse some Olive Oil with it and soap it. I don't know how many of the beneficial constituents would survive the lye process, but its worth a try. You may want to research the constituents (tannins, phenolics, flavonoids, etc) individually to see how they hold up in a high alkaline environment.
Here's some info from Wiki:
The main constituents of the witch hazel extract include tannins, gallic acid, phenolics such as catechins, proanthocyanins, flavonoids (kaempferol, quercetin), as well as essential oils (carvacrol, eugenol, hexenol), choline, and saponins.[citation needed] Distilled witch hazel sold in drug stores and pharmacies typically contains no tannin.[citation needed] Witch hazel is mainly used externally on sores, bruises, and swelling, and witch hazel hydrosol is used in skin care (e.g., as an astringent and anti-oxidant potentially useful in fighting acne).[1] It is often also used as a natural remedy for psoriasis and eczema, in aftershave and in-grown nail applications and to prevent facial sweating and cracked/blistered skin, and for treating insect bites, poison ivy, and hemorrhoids, with evidence lacking for further reported uses including GI maladies (diarrhea, coughing up/vomiting blood), general infections such colds and the specific infection tuberculosis, as well as eye inflammation, bruising, and varicose veins.[7]