Hello Stuart, I see you are in England, Alec Tiranti does a face casting kit although it doesn't include the two MacDonalds straws you have to put up the model's nose or vaseline for the eybrows and hair line. From my catalogue the kit contains '500g of Normal Set Alginate, 1.5 kg Plaster of Paris, Roll of Plaster Bandage, 850 ml Beaker, Plastic Mixing Spatula and Instruction Sheet'. Price at January 2001 - £11-88.
Tiranti's web site:
www.tiranti.co.uk London Shop, 27 Warren Street W1, 020 7636 8565 Head Office, 70 High Street, Theale, Reading, 0118 930 2775
Good luck