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Quantity
1
Depending on the season, there are a few different ways to use Quantum Blue:
with a red light therapy device (read more)
as protection indoors against unopposed blue light (read more)
to maximize the benefits from your time in the sun (r...
Reviews
5.0
7 ratings
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I just started using Quantum Blue and wanted to share a quick impression. I have VERY dry skin, so I typically rely on layering multiple products. I wasn’t sure how to incorporate this one, so I reached out to the company. Caitlin kindly shared a few articles outlining her philosophy that layering is often unnecessary and that her products are designed to perform well on their own.
I was initially skeptical, given how dry my skin is, but so far it has been working very well as a standalone. I apply one pump in the morning, which is enough product, and it holds up nicely throughout my workday. I usually reapply in the early evening. It spreads easily, smells pleasant, and while it leans slightly on the richer, greasier side, that texture is actually ideal for my very dry skin.
OK
Oni K. · February 23, 2026
I use this with my red light therapy. Haven't used it long enough to see the benefits yet. But love the silkiness of it!