Schwarzkopf TCA Test
No one told us we were supposed to put the TCA swatch under heat for the 10 minutes it was processing, therefore new swatches had to be colored to have a fair comparison. We were informed after the fact that heat was to be placed during the processing. The instructions we received had no mention of using heat.
So the comparison was reviewed again. This is the final comparison including the swatches shampooed and left out in the sun. The shampooed swatch is green, the orange is the one left in the sun, red is the control swatch. The results are as follows:
#1 Schwarzkopf 10 min. color processed for 10 minutes.
#2 Schwarzkopf 30 min. color
processed for 30 minutes.
#3 Schwarzkopf 30 min. color with TCA
processed for 10 minutes(no heat)
#4 Schwarzkopf 10 min. color processed for 30 minutes.
#5 #1 Schwarzkopf 10 min. color with TCA processed for 10 minutes(withheat)
The center swatch is the control swatch, on the left side is the shampoo swatch, soaked in shampoo for 5 hours. the swatch on the right is the swatch that was left outdoors for 10 days.
While the TCA swatch with heat came out darker than the swatch without heat, it is still lighter than the Schwarzkopf 10 minute color. It is difficult to see the advantage of a 10 minute color if you have to stand there and watch it process. With 30 minute color you can perform another service while it is processing. Also a 10 minute color continues to darken if left on longer whereas the 30 minute color is not as time sensitive.