This product makes sure a terrifyingly terrific effect. There is literally nothing else like it on the market. I searched high and low for a potential cheaper alternative, finding nothing else. I am so glad I got this. It is strange and uncomfortable in your eye? Yeah, kind of. But the effect is perfect and eyesafe. I have had no issues with continued use (I am a makeup artist in a play for primary use currently) and have generally sensitive eyes.
Long story short- if you’re looking for something that will make the effect of red bloody eyes for photo shoot or film/theater work. This is absolutely it. Worth the money 100%.