The closest experience I've ever had to discovering "the vitamin" was buying a 100% wool outfit and wearing it in the winter.
Not only was I not freezing anymore, I was not sweating and overheating either. The horrible sensory nightmare of winter clothes disappeared.
In particular, I bought a pair of wool pants. They were a thrifted pair of fancy dress pants like you would wear at an important office job, and they were easily the most comfortable pair of winter-appropriate pants i'd ever worn. I wore them Every Single Day.
From that point on I realized a lot of my clothes were making me feel bad, and the common thread was polyester. Especially polyester blends.
It's a trap because the polyester clothes are the ones that always feel sooooo silky soft when they are in the store, whereas cotton, linen and wool can feel comparatively rough and scratchy. But when actually wearing them for hours throughout the day, it's the natural fibers that feel more comfortable.
Maybe the secret to sensory comfort is not about the presence of softness, but the absence of overloading sensations. Or maybe the sensory stress and agony is not triggered by texture of the fabric, but by how it breathes and regulates temperature.
Then there's the problem of clothing life span: polyester blends, no matter how soft they seem at first, become rough and scratchy and covered in hard, itchy pills after wearing them 10 or 20 times, whether or not they have been tumble-dried or even washed at all. (I tested it!) Linen and cotton become softer and more comfy the more you wear them, polyester but ESPECIALLY polyester blends become a constant stressor. Polyester blend t-shirts I used to love for their softness now feel bristly and irritating.
So now I'm trying to change my wardrobe to as many natural fibers as possible, and the more natural fiber clothes i have the more I realize that the plastic fibers stress me out. It's so easy to overheat or freeze in them and they're always degrading and becoming less comfortable and it sucks.
So this was mentioned in the notes (and I mentioned it there, too), but I know that sometimes those just don't get read. So here I will mention other natural fabrics.
Alpaca- my all time favorite. It is both warmer and lighter than wool, and if you have allergic reactions to wool, as I do, this is a great substitute. Alpaca socks are so great.
Cotton- the common fabric. Good for shirts, underthings, socks, pants, you name it. Good at wicking moisture and letting skin breathe, but can also be woven into warmer items such as sweaters. Good all around fabric. Can be strong and used for heavy duty clothing as well as delicate clothes.
Linen- the original warm weather fabric. The more it is washed, the softer it gets. Fabulous in the heat. Use it for bed sheets in the summer and you will never be hot in bed again. It can be used to make shirts, pants, shorts, and underthings.
Silk- great for warm and cool weather. Cool in the heat, warm in the cold, and beautiful no matter what. Can be made as a washable fabric, but usually hand wash or dry clean. Will wear like iron. If you treat it right, you can have silk for 20 years or more. Gloves, socks, underthings, shirts, pants, dresses, jackets, you name it.
Hemp- less well known but a great fabric. Resists mold like you would not believe! Used to make sails for sailing ships, as well as ropes during the age of sail. It was stronger than cotton when wet and would last longer due to the no molding thing. Less water intensive to grow than cotton, with many of the same properties of both linen and cotton. Can be used to make bed sheets, bath towels, shirts, underthings, pants, socks, pretty much anything.
Cashmere- Super luxurious! It is the shed hair of the Cashmere and pashmina goats. Usually made into sweaters, scarves, hats, gloves , and shawls. Super warm and soft. Hand wash or dry clean.
Angora- Also super luxurious. The shed fur of the angora rabbit. Can be used to make sweaters, hats, gloves, shawls, socks, and shawls. Warm, soft, and fluffy.
Mohair- The fur/hair from angora or mohair goats. Used to make sweaters, socks, gloves, hats, scarves, and shawls. Soft and warm.
There are also natural blends. These include (but are not limited to, and are not a complete list): cotton/wool, cotton/linen, cotton/silk, linen/silk, wool/silk, alpaca/wool, cashmere/wool, mohair/wool, etc.
Other natural fibers can include camel, yak, and other animal hair that is shed or clipped and then spun into yarn. Some are more available in certain areas of the world than others. I did not include bamboo due to the massive amount of chemical processing that it takes to extract the fibers. I also did not include lotus silk, byssus silk (sea silk), or any other experimental animal silk (such as the golden orb weaver spider silk) that has been made/created.
Natural fibers cost more to harvest, process, spin, and weave. They can be more difficult to color evenly, because like any natural material they have flaws and variations. This makes them more expensive to work with, which makes the clothing more expensive to produce and sell. But the items produced will last longer (theoretically), will feel better against the skin, and will be better for you in the long run for both you and the planet than clothing yourself in plastic. Microplastics will rub off on your skin, washing away in the washing machines and getting into the water supply. As the fabrics break down, they will become not only rougher against the skin, but also more difficult to mend and patch, limiting their wear life. But because they are plastics, they won't decompose and break down, continuing to pollute the environment unless they can be recycled.
Natural fabrics, in comparison, will become softer over time. They can be repaired more easily as they get holes or tears because the fabric will not have pieces break off like plastic will. It can be easily recycled, and will eventually decompose (which is why archaeologists rarely find clothing and textiles at dig sites), causing little to no damage to the environment. Rarely will a person be allergic to a natural fabric (WOOL! Argh!!!), and when they are, there is usually a protein, emollient, or fabric composition which can be a factor and can (usually) be mitigated, unlike with a synthetic fiber.
Don't get me wrong, synthetic fibers have their place and they have become very useful for certain things. But, we live in a time of fast fashion and high consumerism fueled by synthetic fabrics and exploited labor. Being conscientious of what your clothing is made of, what natural fabrics can do, how long they can last, and why and when you should wear them is a good way to start cutting down on waste while helping your body feel better. And you may find that by limiting the amount of synthetic materials you put on or near your body, that certain things might start to clear up (acne, rashes, etc.).
I know there is much more about fashion and fabrics out there, and I am 100% certain that there is someone out there MUCH more knowledgeable than me. But this is just some information I had and info dumped.
natural fibers knowledge!
I'm a fiber nerd for similar reasons to you, headspace. If you'll humor me, I have a few unsolicited suggestions for looking for natural fibers in thrift stores (other than looking at the tags, naturally, but also since I don't always trust the tags, since fabric fraud or mislabeling isn't uncommon, and tags can be missing or hard to find).
Bast fibers like linen and hemp usually have a fair number of slubs and are usually woven for durability, because lightweight knits tend to unravel near the slubs just around the same time that the wear level starts to get Perfect.
If you're running through the racks and find a nice hand, remember that synthetics tend to absorb water poorly. Holding the fabric for just a moment and then rubbing the fingers together usually tells me if the moisture was absorbed, or if my hands are still sticky. Fabric softener and dry cleaning can fool me sometimes.
Same as the above, synthetics tend to reflect heat. If a fabric feels soft to the hand, hold onto it a moment. Silk and wool warm up slowly, but synthetics feel "warm" almost immediately. Plant fibers also warm pretty quickly in the hand, but will still absorb water.
Silk and wool are HEAVY on the thread level. A tightly woven silk jacket is way heavier than a poly or nylon one of similar thread gauge.
And although your assessments are largely excellent, pyroteknich, I have a few nits to pick:
Cotton gets WET and holds 36x its own weight in water, compared to ~6x for bast fibers and a little more for wool and silk. When it's wet, the water clogs the gaps in the clothes and prevents airflow. I mention this because I live in a humid subtropical area and sweat basically doesn't evaporate. Cotton means a swampy underside, or all-over-side if you're working hard enough or get caught in the rain. A notable exception to this is very loose and billowy clothing like gauzy skirts. I generally avoid cotton entirely because of its water-holding capacity.
Silk does wear like iron unless it gets wet, then it's very weak and abrades easily. Normal activities in my area will cause sweat to build up and that moisture will shred silks. Again, the solution is loose and billowy, and being choosy about which fabrics during particular times of year. I tend toward bast fibers in the warmer months and silks in the cooler ones. Reconstituted cellulose fibers like "bamboo", ramie, rayon, and so on have similarly poor durability when wet. Silk also stains very easily and HATES being in the sun to dry or for too long period, as UV light breaks it down, just something to be aware of.
And also unsolicited, I would like to share a few tips I've picked up for keeping natural fibers in good shape so they can get to that delightful broken-in level. We have very, very soft water in my area, so your mileage may vary.
If not handwashing, a top-loading washer, filled up completely with cold water, is pretty close to handwashing, on delicate settings.
Most of the time, "dry clean only" is a bunch of nonsense, except with suits or dresses made with water-soluble interfacing. People washed these pieces for how many centuries before dry cleaning existed? Yeah. Unfortunately, I don't know an easy way to find out if interfacings are water-soluble, except to give the piece a wash. I've restored dozens of stinky natural-fiber pieces that were discarded because the original owner's dry cleaning didn't remove the water-soluble odors, and I "restored" them just by giving them a nice wash. Sometimes a pair of suit pants or a jacket will start poking out the plastic interfacing after the wash, so yknow. Caveat washor.
Even if handwashing, strongly alkaline detergents or high heat will cause protein-based fibers like wools and silks to denature and degrade rapidly during the abrasion of washing. Vinegar will help, and mild curd soaps are best. If only washing wools, a little liquid lanolin mixed well with hot water and curd soap prior to adding to the wash water will help restore the fibers, making the garment more water-repellent, stronger, and more durable. Small amounts of detergents can be used to boost the efficacy of the wash if there is a lot of oil in the laundry soils.
Inversely, plant fibers prefer hot water and can withstand alkaline detergents well, making washing soda and borax viable additions, but hot water will often cause stains to set. I like to help remove the alkalines from the fabric by using vinegar in the rinse. Machine drying, even on "air dry" settings, will still cause static buildup in the fibers, making them slightly water-repellent and for myself, an extremely unpleasant sensory experience. I try to line-dry everything, which is difficult when showers and storms are unpredictable and frequent, and the humidity is 70%+ most days during the hottest part of the day. Still worth it, and indoor line-dry is an option.
Wools and silks are magnets for carpet beetles and clothes moths. When I'm storing clothes for the season, I wash them, gently lanolize the wools, make sure they're 100% dry, then heat up an oven with a baking stone to 200F (90C), line a metal sheet pan with parchment paper, cut the oven, and then leave the clothes in the oven for 30min to kill any eggs. Then I wrap them tightly with plastic bags and put them in plastic bins for storage, and I've never had a problem with insects since. I got the idea from bedbug treatments.
I hope that fellow sufferers from fast fashion and the electrostatic nightmare that is synthetic clothing can get a little something out of the years I've been working on this. I have pieces I've been wearing regularly for 15 years using these techniques.
MORE NATURAL FIBERS KNOWLEDGE
Excellent stuff here! A lot of what I was gonna say has already been added. I've got my wardrobe 99% natural fibers at this point, due to doing a lot of sewing and having a strong interest in historical clothes (even most of my cosplays are natural fiber, which makes me feel good since I get worried about the environmental impact of some cosplay materials). I'll add that if you (like me) struggle with sensory ick around wet feelings, you should definitely lean on linen. Cotton, as mentioned, traps moisture a lot. I find that silk can sometimes trap moisture a good deal (depends on your body, how much you sweat, and what silk you're wearing as what layer, and what environment you're in). If you are also a sweaty beast who wants to wear silk, I recommend putting on a base layer. Even though cotton can be pretty wet, sometimes wearing a cotton t-shirt can help. If you have linen underclothes, wear those.
And with wool, if you struggle with itchy scratchy feelings, I really recommend checking out sporty wools like merino (which is common in socks, and very comfortable), as well as those other specialty wool fibers (llama, alpaca, angora, cashmere, yak). Specialty wools are usually more expensive; start with merino for a lower price point, usually (this also depends on where you are; if you live really close to an area with loads of llamas or something, that'll likely make that wool cheaper, but I don't know your life). If you have to get a blend with a manmade fabric, try to get rayon. It's at least made of cellulose, and it tends to give things a more liquid, silky hand.
Be mindful of the seams! Labels usually only consider the fabric and not the thread of the seams. Very often, you’ll find a clothe marketed as 100% natural fibre but when you check inside the clothe, you see the seams are all shiny (meaning synthetic threads). Since those seams are usually near sensitive areas (armpits, inside of thighs, etc) you’ll get the same level of discomfort and you won’t know why…
