Emjaetee,
I came across this literature from Gunze Sangyo given to me by STC as to how to use most of their products. I thought you'll be interested in the use Mr. Retarder mild, so word for word here it is:
Mr. Retarder Mild
Mr. retrder Mild is an agent for retarding the drying of Mr. Color paints and eliminating lumps in brush painted surfaces. In addition, it alos greatly improves the eveness of the Mr. Color paint film and thus dramatically increase luster.
Method of use: ( with a brush)
1. Add approx. 10% Mr. Retarder Mild to Mr. Color and mix in well.
2. Mr. Retarder Mild should be added after transferring Mr. Color to another container such as apaint dish.
3. Your brush strokes should all be in the same direction. Don't be concerned about any brush marks or lumps, as these will disappear.
With an airbrush
1. Add approx 20% Mr. Retarder Mild to Mr. Color and mix in well.
2. One of Mr. Retarder Mild's special features is that it is effective in thinning Mr. Color Paints, while producing more luster than Mr. Thinner. However, adding more than 20% delays drying time longer than required, so if you want to thin Mr. Color more you should use Mr. Thinner.
3. The method for application is the same as for for regular spraying. However, take care, since the paint may start to dribble.
Hope this helps you in handbrushing your models.
To any IPMS Manila members who wants a copy, I'm bringing a copy on our next meet and you could probably have photocopied then.
Rico