In terms of ingredients, here I would definitely recommend the hyaluronic one. In theory, I once heard that methylparaben can be potentially irritating with AD, but I have quite a tendency to this myself, and absolutely nothing happens to me. On the contrary, my hands feel very moisturised and nourished. I would indeed avoid retinol, especially in AD flare-ups. It can cause increased irritation or redness of the skin, although as usual this is very much an individual issue. :)

Again - this comes down to an individual issue. Fragrances have a considerable allergenic potential (Parfum), but here the scent is really subtle and the hand skin is undoubtedly less delicate than, for example, the sensitive eye area. Nevertheless, with very allergy-sensitive skin, I would avoid fragrances. 

I don't cling to parabens, as this publicity about them is completely unnecessary. They are well researched and are found in masses of products for very sensitive skin. 

This is where I would think about, or poke around with, an alternative version of a night product with a similar formulation:

- The gloves will be heavily occlusive, but also impermeable due to the serum being enclosed in a package that prevents leakage / evaporation (if only because of the possibility of using phones etc. at the time).

Here I would suggest two alternatives:

- cotton gloves with your logo (universal, reusable)
and strong mask / your new hand cream) 

Or a version of a serum applied to the hands + a heavier cream, a'la paraffin cream. From what I gather, Bielenda professional has released such products for people for whom traditional paraffin therapy is not possible or recommended

- In this overnight form, for example, they can have a negative effect on hybrid varnish,
or even the natural tile by over-softening it. It would be damp
and at the same time a closed environment. Of course, gloves have ingredients that prevent bacterial growth, but hybrid varnish could have a much reduced lifespan or fall off sooner.

They can confidently be used in the teenage years, where, incidentally, AD or other skin problems are common. Of course, hyaluron would be "gentler", but retinol is also introduced in teenage patients, only the process of introducing them into skincare is even more cautious. 

Considering that puberty is falling earlier and earlier, around 11-12 years? I don't know how you guys aim for that, but they are really objectively very safe and good compositionally.

With breastfeeding, sooner. In pregnancy, retinol is discouraged, due to its high activity and penetration potential. One might think, for example:
of an alternative from bacuchiol, considered to be its safe (also
during pregnancy) substitute.