playing catch up again...
nickpic, that does look to be an improvement, so I'm glad it's working for you, no more product reactions?
WRT mirena coil, it is a possibility some hormones cause skin thickening, that in combination with the dehydration may be the root cause but it's all very speculative from my end.
WRT dermabrasion. I'm always a bit surprised to see this pop up as I only ever see it mentioned on MN. IMO it was a bit of a fad a few years ago and I hardly ever hear of dermatologists suggesting it (as a standalone procedure) and only really see beauty therapists market it aggressively (groupon and similar offers). Makes sense, they've made the investment in the machinery, probably on the end of the trend, and need to see returns on it. It's a very intensive treatment and the results are not instantly trans-formative or permanent, in order to maintain results you need to continue for several sessions and hope not to wreck your skin in the process. Anecdotally, the most horrific stories surrounding beauty treatments I've heard are all dermabrasion related (usually the BT being too aggressive), the damage being quite severe and in some cases permanent. The key to successful dermabrasion really is down to a well trained technician and the adjuvant therapies and probably most importantly the products applied directly after, usually containing high doses of active ingredients depending on skin need/problem. I'd really only ever feel comfortable seeing a qualified aesthetic derm for that and as mentioned a lot of those have moved on from microdermabrasion to things like laser, microneedling, and peels. They'd also be a better authority to truly assess your skin and rule out anything else at play. If you're serious about spending a bit of money on this I'd look towards a TCA peel (think it also goes by the name Jessner Peel) as performed by a (cosmetic) dermatologist as that has added hydration boosting effects (in comparison to just laser and similar procedures).
purple15, for a Biore (2016) alternative that's easily available locally I'd suggest the Body Shop Skin Defence. It's lightweight, minor fragrance, an essence-like feel (but probably not as light as the Biore, but far from uncomfortable), not sweat/water resistant, etc. Reasonably affordable, especially when they do their fairly regular 40% off offer.
otyt, good to hear it was nothing serious! I don't think I've ever been asked the religion question in hospital, might just put down Jedi if it ever comes up 
Enid, I vaguely remember reading similar about Biotin as mentioned by Lego. It only really helps if your own Biotin levels are low (which is really rare) and has some nasty side-effects if that isn't the case IIRC.
Bunny, is your face still there? There's not much you can do about it after the fact (and my tardy reply) but just be superduper diligent with sunscreen and lay off other actives. Saying that, I vaguely recall that SR skincare use some other form of SA to make it compliant to regulations so don't know if those peels are really as strong as they sound. I used to see a facialist who put quite a high strength BHA on my nose and it always resulted in my skin peeling off there the next day (nothing serious or scary) so I'd expect that to be the worst barring an instant reaction.
Welcome Tree! MNHQ I think I deserve a reward or something for all these lurkers registering Ehm, would you be so kind and share your notes with me, it's a lot of work going through it all to condense it all so anything helps me out? Glad the information has been useful for you and weened you away from evilcorp QVC.
Lord, sunscreen before introducing anything on that list. The "Where to Start" sheet in the OP will help with how and when to introduce the different products. Remember to take your time and introduce everything gradually with two weeks apart minimum (exception for cleansers).
Dulci, the great and confusing thing about Vit C is that its benefits are multifaceted, but it also means some of its effect is cumulative and others are temporary. eg. For pigmentation it helps with melanin inhibition and skin turnover and therefore fades it gradually but for brightening it acts as a collagen promoter and is mildy exfoliating (L-AA at least) which causes that Vit C glow, but since it's fast acting that effect is really only sustained through continued use as without it you rely on the (naturally) lower collagen levels and slower exfoliation cycle. Since TO 23% also has a bit of HA (same with the temporary effect) in it I assume that contributes to the glowy plump look too.
wilting, I'm thinking of upping the ALA use with Inositol after I see my gyn again in June, what was the suggested dose you use again? I wrote down 600mg but didn't note down if that was 2x 600mg or 2x 300mg in total.
legfaced, if you're sensitive I'd stay away from the entire Nip+Fab range and the dragon's blood pads specifically are more of interest to combo/oily skin. As for an overhaul, why? I'm not saying what you're using is perfect but if it's working for you, especially taking in the sensitivities, why tinker with it without any specific concerns? I would suggest swapping out the micellar for a proper cleanser and using the SPF year-round. I'm assuming you're dehydrated (age+ emerging fine lines+difficult to tackle dryness) so integrating a hydrating serum probably makes sense.
@bananafish81 , yes, that sounds like KP. The bumpy-agro phase is usually more of a thing when you're younger. I find it's really personal, mine reacts well to Glycolic, even in lower % and there's plenty of KP marketed body creams with Glycolic. Others respond better to BHA, or Urea, or Lactic, or Retinol. You kind of have to see what does and doesn't work. I do well with dry brushing + any from of AHA and generally treating it a bit like crap (the less body lotion and other pampering occlusive things the better, so I use a giant bottle of Japanese 'lotion' which is the watery stuff like Hada Labo which is hydrating and has skin restoring agents but no occlusives, sometimes a dry oil but nothing that sits on top iyswim). Mine also really responds well to Retinol but it's really too expensive of a hobby to do on a regular basis as the actives for body lines are pretty much non-existent. I have a vague theory that the skin as it is without the KP sort of determines whether AHA or BHA works better, if you're more acne prone/oily (face and body) BHA would be more suited and vice versa. It's usually just about figuring out the right combo of procedures/ingredients that work for you.
I saw Nars is bringing out a new limited edition line with Charlotte Gainsbourg I WANT IT ALL with a sort of hybrid tinted moisturiser/foundation that looks really promising. I do think Nars along with Bobbi Brown and Laura Mercier are some the rare brands out there who do a good shade range that actively avoid the more irritating ingredients but for whatever reason Nars seems to be the least problematic.
As to the no powder, was the regimen sheet specifically made for you or just a general suggestion info sheet for those with acne? I can imagine that if you're on acne medication like a Retinoid which is very drying that it is then best to avoid powders in fear of further exasperating dryness. Maybe you can ask if the By Terry Hydra powder would be okay to use in that case?
Could also be the general not loading up your face with too much makeup theory, I know Dr. Sam is more an advocate of single cleansing as much as possible (which is indeed more sensible when under prescription and/or especially sensitive/compromised) ergo keeping amount of makeup products to a minimum keeps that regime effective and manageable?
VictoriaandBump, what retinols have you used before to make you determine it doesn't irritate you? Generally not a fan of the existence of the TO 1% version due to general confusion in their lineup and contradiction to their whole 'ethos'. That aside, I think the efficacy is probably more immediate and that may be confused by some as being more effective depending for what you're using it. For anti-ageing there's plenty of science to support that low % and long term use is just as effective as high strength, some new research emerging too on the acne front in terms of long term improvements.