So far, the other natural products which are anti-androgen and block DHT are:
Herb: Nettles (known for blocking DHT)
Herb: Saw Palmetto
Pumpkin Seed Oil
Soy Isoflavins (Genistein)
Acne is not the only problem caused by over-androgen activity and DHT... other problems are: PCOS (in women), hirutism (in women), hairloss (in men) and of course acne.