I went on an acrylic nail course 2 weeks ago and we worked on each other as models and for the assessment. we had an odd number in our class so I asked my sister to be my model. The teacher however wanted everyone to go home with nice nails so she did mine for me, however i have just soaked mine off and 2 or 3 of my natural nails looked discoloured, not that yellow tinged if you wear a real dark varnish and no basecoat its more green ? looks bruised like ? is this an infection does any one now why its done this ? as a newbie to nail this is really off putting!!!! tech