I haven't been wearing eyeliner because it usually winds up below my eyes, since they tend to water. However, when I read that this is opthalmologist tested, I took a chance. I couldn't be happier, because it smudges into a soft look that definitely enhances the eyes and is subtle enough for my age even with glasses. I have had no problems with sensitivity, and I will most certainly try the other colors.
I have been wearing Estee Lauder Hyacinth Sky eyeliner for years! I have green eyes, but sometimes the liner can make them look a little blue. It is honestly the best eyeliner and color for me. Stays on all day.