SACD Warning--"Do not use liquid cleaning..." ?

Okay, I found this on the Auric Illuminator website, which seems to answer my orignial question:

Auric Illuminator is not compatible with early made hybrid SACDs made by Sonopress. You can identify SONOPRESS SACDs by a marking around the inner spindle circumference.

As of May 2003 Sonopress states "now we are using other materials and it is no longer necessary to have a special frontcoating. These discs have no sticker (warning against topical treatments) and you can clean the laserentry side carefully with special liquids like a normal CD." Therefore it is safe to apply Auric Illuminator to new Sonopress SACDs.

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I'm not sure what the "special frontcoating" was, but apparently that was the problem.

Zombie thread comes ALIVE...
Sadly I bought a used SACD ($3 so not a big deal) but I destroyed it, not knowing it would start to craze from a kitchen sink wash, polish. Sadly not only did it start to craze immediately, as I kept at it, the formed gunk would clear off in spots revealing a perfect layer underneath, only to have that layer start to get messed up. At first I thought it was some sort of protective stuff, perhaps added by previous owner. Nope.. as layer after layer of perfect newly exposed surface went bad.. Finally I read up on SACD and polishing them. Found this thread.
So mainly want to warn used SACD buyers. Some of them cannot be polished, cannot be washed with detergent.
Never had this experience before. but never bought used SACD either...

elizabeth

Thanks for sharing. I suspect that certain branded cleaner/polish are more abrasive than others. On the flip-side, possibly a detergent based product is to blame.  Happy Listening!

The SACDs that were easily damaged were a different material than the rest. All the companies using the stuff have stopped. But those old used easy to damage ones may be floating around in the used bins with NO WARNING on them.  
From my experience the 'easy to damage' seem to be made up of very many thin layers stacked up, vs one (two for SACD) thicker layer of the vast majority of CDs and SACDs (which have no problem being polished)

I clean all my discs with distilled water and a tiny amount of pure liquid soap, just to break the surface tension of the mold release

I used to use various cleaners and polishers but over time they oxidize and roll everything off. Not a big eal, as simple to wash, repeat