Table 1. Surface tension vs. time of a trisiloxane at different pH levels

Sample	Day 1	Day 2	Day 3	Day 4	Day 5	Day 7	Day 14	Day 21	Day 28
PEG-8 Dimethicone	21.0	20.8	20.8	20.8	20.9	20.9	20.7	20.8	20.7
PEG-8 Dimethicone (pH 10)	20.8	21.0	21.5	21.6	22.4	21.7	21.6	21.6	24.0
PEG-8 Dimethicone (pH 4)	20.8	22.3	25.3	28.9	43.5	-	-	-	-
PEG-8 Dimethicone (pH 8)	20.9	21.0	20.8	20.9	20.9	40.8	-	-	-