Figure 2.

Effect of dimeticone 4% lotion on water loss from fed lice. Head lice were weighed prior to feeding, immediately after feeding to determine the blood meal weight, and then at regular intervals. This graph compares weight loss in lice treated by immersion in dimeticone 4% lotion immediately after feeding with weight loss in untreated lice, to show the inhibition of water loss by transpiration following treatment. The initial rise in weight of treated lice was due to silicone fluid residues on the cuticle that evaporated over the next 30 minutes.