Clean a sheepskin as all other woolskin - Wool-safe! Leather-safe!
Some sheepskin are tanned washable some tanned non-washable.
Non-washable shouldn’t have the skin wet; it will turn stiff when dry or in some other woolskin in pieces if you put it into a washing machine!
Wool is very absorbent, so what grease is release may be re-absorbed by the wool gain.
Both the wool side and the skin side are pH sensitive.
This is what I used for cleaning them:
Wool side:
d’Lanolin5.6™ pH 5.6 is used as a pre-spray.
shearling5.5™ pH 5.5 is used as a cleaner.
rinse4.0™ pH 4.0 is used as a rinse.
The wool will bloom with brilliancy without yellowing.
Skin side:
When wet re-fatliquor5.0™ so that it will not stiffen when dry.
When cleaning is needed to be done on this side use:
clean3.8™ pH 3.8 and rinse3.0™ pH 3.0. thereafter fatliquor it.
It may sound silly, but you can clean all woolskin safely, be it an alpaca, deer, zebra and all other exotic woolskin and hair-on.
Do the way that pleases you!
That's the way I do it, to please my customers!
Roger Koh
Leather Doctor®
Institute of Inspection, Cleaning and Restoration Certification #942
Leather Care Technician
Master Textile Cleaner
Master Fire & Smoke Restorer
Journeyman Water Restorer
Since 1973