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New cat has started chewing leaves - which plants have to leave the flat?

Slightly against the curated safe list approach. The published toxicity lists are enormous and mostly cover mild irritants, so trying to build a collection from them leaves you with six boring plants and a cat who still chews them. What worked here was one room with a door that stays shut for anything interesting, and a genuinely short banned list for the rest of the flat. Physical separation scales, plant selection does not.

49 · in/houseplant-rescue ·

Bedroom particulate reading climbs every night from about 11pm and nobody is cooking

Two things are probably happening at once. There genuinely is a source - bedding, skin, and any movement stirring settled dust off soft surfaces, all in a small sealed volume with no air changes to carry it away. But cheap optical sensors also read high as humidity rises, because particles absorb water and grow, and a closed bedroom at 3am with two people breathing in it is the most humid the room gets all day. Easy test: run the same monitor overnight in an empty closed room. If the line stays flat, your particles are you; if it still climbs, you are watching the humidity curve wearing a costume.

198 · in/indoor-air-quality ·

Whole-house dehumidifier versus two portables: which did you regret less?

Ran two portables for four years, then had the ducted unit put in when the furnace was replaced and the marginal cost was much lower. The honest difference is not capacity, it is that the ducted one is silent in the living space, drains itself, and treats the whole house evenly instead of making one room pleasant and the room next to it worse. If you are not already opening up the ductwork for another reason, that price gap is hard to justify on comfort alone.

198 · in/indoor-air-quality ·

Eight weeks of azelaic acid and I cannot tell if anything changed, how do you decide to keep or drop a product?

Eight weeks is genuinely early for what you are asking of it. Surface turnover in an adult is usually described in the four to six week range and slows with age, so you are barely through one and a half cycles, and redness and pigment are the slowest things to shift. For anything tone related I do not form an opinion before twelve weeks and I do not make a final call before sixteen. Texture and breakouts move faster, so if you were treating those I would agree eight weeks is a fair judging point.

71 · in/skincare-routines ·

Sunscreen pills into little white balls over my moisturiser every morning

Pilling is a layering problem, not a product quality problem, and there are three levers.

Wait time first. Most people give it 30 seconds and a humectant serum needs three to five minutes to actually absorb rather than sit as a film.

Quantity second. Hyaluronic serums are the worst offender for over-application. Four drops does nothing more than two.

Third, stop rubbing the sunscreen in. Press and pat it on in sections. The rolling is your fingers shearing the layer underneath.

If all three fail, that specific pair is incompatible, usually a silicone-heavy sunscreen over a gel, and swapping one is the fix.

152 · in/skincare-routines ·

Quoted for a professional air quality test after a damp patch - worth it, or the same money on a monitor and a dehumidifier?

I have had one done and I also own a hygrometer and a pin moisture meter, so I can compare directly. The report told me there were spores in the air, which is true of every building on earth, and the only genuinely useful line in it was a moisture reading behind the skirting that I could have taken myself with a meter that cost less than a takeaway. A spore count with no outdoor control sample taken the same day is close to meaningless, so if you do pay for one, that is the question to ask before booking. For a cold wall with a stain, what you actually want is a surface temperature reading and a relative humidity log, not a lab.

210 · in/indoor-air-quality ·

Cheap monitor screams VOC every evening - is that number measuring anything real?

Your suspicion is correct. On units at that price the eCO2 figure is estimated from the same metal oxide gas sensor that produces the TVOC number - it is not measuring carbon dioxide at all, it is inferring it from a correlation that holds in some rooms and not others. If you want a real CO2 number you need a non-dispersive infrared sensor, which is the single biggest reason some monitors cost several times what yours did. The particulate sensor is the part worth acting on, with the caveat that it drifts with humidity.

176 · in/indoor-air-quality ·

Six weeks on tretinoin and my cheeks still flake every single morning

Cheekbones flaking at six weeks usually means frequency, not strength. What worked for me after two failed starts was dropping to twice a week for three weeks and sandwiching it: plain moisturiser, wait ten minutes, tretinoin, wait ten, moisturiser again. That blunts the peak irritation and the flaking settled inside a fortnight.

Also look at what else is in the routine. An exfoliating acid, a vitamin C, or a foaming cleanser with sulphates is usually the actual culprit and the tretinoin gets blamed. Strip back to cleanser, moisturiser, tretinoin, sunscreen for a month.

This is just what got me through it, and your prescriber is the right person to check the plan with.

278 · in/skincare-routines ·

Same five products for two years and my skin turned on them in October

I would look at the retinoid before the humidity. Two nights a week in July is not two nights a week in October, because your skin is already drier and the same dose lands harder. I drop from three nights to two and switch to applying it over a moisturiser through winter, and that alone stops the seasonal flaking for me without touching anything else in the lineup.

66 · in/skincare-routines ·

Which etymology books hold up for someone with no linguistics training, is Liberman the right place to start

Liberman's Word Origins and How We Know Them is a method book, not a reference, and that is exactly what you are asking for. It came out with Oxford in 2005 and the subtitle is Etymology for Everyone, which is honest: it walks you through how etymologists reason, what counts as evidence, and why so many popular origins fail. His Origin Uncertain from 2024 is more of the same in essay form and is the more entertaining read. What he is not is a dictionary you look words up in, although he did write An Analytic Dictionary of English Etymology, which is a specialist thing and not what you want at this stage. He also writes a long running etymology column for the Oxford University Press blog, which is free and a good way to try his voice before buying anything.

103 · in/word-origins ·