Is the 25000 ampoule meant for daily or weekly use?

Weekly, not daily. Use it every seven days in the evening after cleansing.

Where does it go in my routine, and how should I apply it?

Use it as the first skincare step on bare facial skin. Apply an appropriate amount, avoid the eye and lip areas, and rub it in to aid absorption. Once absorbed, finish with a hydrating formula.

Should I rinse the ampoule off after it absorbs?

No. Leave it on, then continue with a hydrating formula after it absorbs.

Does the 25000 ampoule tingle when applied?

Yes. The range is described as tingling, and the 25000 ampoule is flagged as meaningfully stimulating. The sensation may persist for some time.

What is the texture and after-feel like?

It is described as lightweight, quick-absorbing and non-sticky, with a tingling sensation that may linger.

Which skin types is it for, and what should sensitive skin know?

It is designated for all skin types. If you have allergic, troubled or sensitive skin, patch-test a localized area before use; this is a stimulating formula.

Which exosome-derived ingredients are declared, and in what amounts?

The formula declares Lactobacillus Extracellular Vesicles at 154 ppm and Milk Exosomes at 10 ppm. The “25000” variant name is not the concentration of either ingredient.