Learn a Magic Trick

Presto Change-o

The following is a chemical effect that I developed to produce color changing liquid. All of the chemicals are available to the average consumer.


Use of the chemicals for this effect are at your own risk. Some of these chemicals are toxic if taken internally. As with all chemical effects, adult supervision is essential. Follow all warnings on each chemical used. No one associated with this page will be responsible for any injury resulting from the information therein.


Several containers of clear liquid are displayed. A dye is placed in one of the containers and it changes to a golden yellow. Another clear liquid is added and it turns to a deep blue/black. A third clear liquid changes it to a wine red, and the fourth one restores it to sparkling clear again.


You will need the following chemicals:

  1. Rubbing Alcohol
  2. Tincture of Iodine
  3. Ex-Lax(R) Tablets (the pills, not the chocolate stuff)
  4. Corn Starch
  5. Washing soda with ammonia
  6. White Vinegar
  7. Hypo (sodium thiosulphate) from a photography supply store