White plus clear equals blue?

Jonathan Hoenig, MD answers: How to avoid the Tyndall effect?

Just want to be sure I understand, can the Tyndall effect be avoided by injecting under the muscle, in the tear trough area?

I had this done four days ago and I see a very slight bruising, but I think it is because the restylane is still concentrated in a raised area that is shadowing in a manner resembling slight bruising. I hope that when the swelling goes all the way down, the bruising look will go away too.


Jonathan Hoenig, MD
4 months ago

Have you ever noticed that in a swimming pool with white plaster and clear water, the water still looks blue? That is the Tyndall effect. Because Restylane is composed of a clear material, when light passes through it, it can cast a bluish appearance. If the Restylane is placed near the surface of the skin (especially thin eyelid skin), this can happen. If it is deep beneath thick skin or even under muscle, it won't be visible. So, if your Restylane was placed deep enough, then what you're seeing is likely a bruise.

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