I have similar issues and have been working with Philosophy's skin care products. Pricier than some, but I look for sales and promotions They seem to be kinder and gentler, not a lot of extra or irritating ingredients and they work well. The oxygen peel is not irritating on my skin, but it is deep cleaning. The Microdelivery Scrub or Miracle Worker cleanser (lactic acid to exfoliate) might help for daily cleaning. I've also gotten a cleanser with pineapple enzymes that was recommended for my son when he had acne. He didn't like it, but I did. I think it is made by alba. I've seen it at Ulta, Target and other stores.

I know this isn't what you asked for, but when I went to the dermatologist recently she gave me something called "Replenix" to try. I have tried retin-a products in the past but they were always too harsh for my skin so she recommended this. It is a retinol product which is milder than retin-a products but works like retin-a to make pores smaller and reduce sun damage and I believe it would probably eventually remove the spots you are talking about. It is not a prescription item - you can buy it on amazon and other places. There are various strengths - I started with 3x and have just ordered 6x and I think it goes up to 10x. I use a tinted moisturizer from Smashbox which I like and it has sun protection in it too I think, but it is lighter than a concealer. Good luck - I too am fair-skinned and beginning to pay for all the years when I was younger and lived in the sun, using baby oil mixed with iodine for a tan.

We initially thought it was calcium build up, but of course, it's distilled water - there shouldn't be any calcium in it. The condensed water is clean no matter what temperature it condense at and probably very clean. Condensing is a layman engineering term as the liquid considered in balance # molecules leaving equal to number of entering the liquid. With condensation more molecules enter the liquid and than leaves. = The water in your condensate drain in no way as clean as distilled. First there is a debris and dust as the water drips over dusty coil and washes rusted drain pan; than there could be bacteria if pipes stay wet or drain pan, than evaporator coil coatings, at 15 years also contains rust and mechanical .., it could contain some minerals in your air. Can it clog up drain line? Of course after 15 years most definitely.

Not sure what the list is - are those things youve tried? I guess the question would be just how deeply into the pores of the wood did the stain go - experimenting in an out of the way spot would be the best ay to answer. If its just sitting on the surface (like the cheap stuff I used on a porch several years ago) and already wearing off conceivably it could be easy to get off most of it but cedar shingles being what they are - rough textured, open pores - that stuff could have gotten down pretty deep and probably will never look like pristine new shingles. HOWEVER .... I think they could still look pretty fantastic sanded off even if theres bits of old colors still remaining deep in the wood. Weathered/distressed wood is very much a thing now - as you know if youve looked at siding or flooring lately!