Safely dilute this 35% hydrogen peroxide solution to 3% and store after opening (no stabilizer)?

The problem: eating [yellow curry](https://en.wikipedia.org/wiki/Yellow_curry) with [naan](https://en.wikipedia.org/wiki/Naan) and no spoon for the first time resulted in a wonderful dinner but some permanent yellow stain on my cotton shirt. I assume it's coming at least in part from the [curcumin](https://en.wikipedia.org/wiki/Curcumin) from [turmeric](https://en.wikipedia.org/wiki/Turmeric).


I've had some success removing bleach-resistant stains with household ~3% hydrogen peroxide. However that's surprisingly difficult to find where I live.


So I stopped by a chemistry supply shop, and they handed me a plastic bottle of 35% $\ce{H2O2}$ solution, specific gravity 1.196.


The Chinese writing on the label are common sense safety instructions (store away from light, not safe for food preparation, etc.).


Unlike household peroxide, and like some kinds of oxidizes in spacecraft ([Does the Soyuz spacecraft use chemically stabilized hydrogen peroxide (H₂O₂) to remain ISS-dockable for 200+ days?](https://space.stackexchange.com/q/31337/12102)) the does not appear that there are any stabilizers in the solution.


**Question:** How can I safely dilute to 3%, and best store after opening this 35% hydrogen peroxide solution?


I plan to dilute enough for my present needs, and try to just screw the cap back on the rest of the bottle, but maybe there's more things to consider?


Click images for full size:


[![35% hydrogen peroxide H2O2](https://i.stack.imgur.com/hLXj7m.jpg)](https://i.stack.imgur.com/hLXj7.jpg) [![cotton shirt stained by yellow curry](https://i.stack.imgur.com/llXzYm.jpg)](https://i.stack.imgur.com/llXzY.jpg)


