Two products in your ritual carry the same number. That's not an accident, and it's not laziness, it's a pairing instruction hiding in plain sight.
The Glow-Signal TXA Serum earns its 4.0 from arithmetic, 3% Tranexamic Acid plus 1% NAG. The Glow-TXA Capsule Crème earns its 4.0 differently: from the "Big Four", four hero actives suspended inside its capsules, Tranexamic Acid, Alpha-Arbutin, Glutathione, and a peptide complex, working the barrier and the pigment problem at the same time instead of asking you to pick one concern per product.
Same number, two different equations. Which is really the point, they're built to be used together, and the shared 4.0 is our way of telling you that without a paragraph of instructions on the box. See the serum, see the crème, notice the number matches, understand the order without being told.
You mix the capsule contents into the gel base in your palm, more gel for a lighter night, more capsule for a heavier one. No rupture, no drama on contact. Just four actives, released as you decide you need them, doing work that took real formulation math to keep stable until that exact moment.
Two products, one shared number between them, like a house key and its copy. Different metal, same lock.
The Science of Calm. The Spirit of Rose.
