Vulpex is concentrated and must be used in diluted form. 

Vulpex Spirit Soap is supplied as a dense concentrate form, which needs to be diluted before use.

Dilution ratios differ according to whether diluting with water or diluting with white spirit. 

To start with 1 part Vulpex soap in 6 to 7 parts water (by volume) is recommended. More water can be added if the soiling is light. 

As a spirit soap, 1 part Vulpex in 10 to 20 parts solvent will be found effective. Normally, only a few seconds of scrubbing or rubbing will be enough to break up and dissolve grime films. Adjust dilution accordingly. (A sign of poor dilution is that a greasy like residue will remain on the surface after application, being the solids content of Vulpex).

A final rinse or wipe-over with clean water completes the job, leaving nothing behind to create future conservation problems. Dirty Vulpex solutions need not be discarded; the solution remains highly active for months even though highly charged with emulsified grime. In cold weather separation may occur, shake container vigorously to eradicate and the efficiency of Vulpex are not diminished because it appears more or less viscous.

French Polished Surfaces 
Do not clean with Vulpex solution, because it may cause streaks. Instead use a few drops of liquid soap in paraffin.

Vulpex can be used with care to cleanse gilded items. Dilute with a suitable solvent to accommodate the composition of the gilding base gesso and then use a damp (as dry as possible) swab to locally cleanse the effected area. After application cleanse the treated surface with a similarly lightly damped swab of the chosen solvent. When dry a careful application of Renaissance Wax will help to brighten and protect the surface for the future.

For removing layers of dirt/ grease hardened by age Vulpex is the preferred choice for trained conservators, and because Vulpex is alkaline (non acid) it will not harm gold. Ideally immerse the object in a plastic or stainless steel bath containing 1 part Vulpex in 10 parts white spirit (by volume) and very gently scrub the dirty surfaces with a nylon bristle brush. If white spirit is thought to be too 'strong' a solvent then it may be replaced with paraffin. Once the object is clean rinse it with plain paraffin to remove all traces of the Vulpex soap and thoroughly dry (ideally by natural means or by using a controllable hot air dryer). As soon as the surface is both clean and dry, don a pair of lint-free cotton gloves to hold the piece and then apply a thin film of Renaissance Wax, allowing it to harden for a few minutes before very gently polishing it with a soft clean lint-free or microfibre cloth till it shines and is glass-clear. 2 or 3 thin applications of Renaissance Wax will deepen the lustre and the protection provided. If the wax is caught in finely carved areas polish out with a soft brush to prevent the wax drying in solid white deposits. The first waxing, which provides a 'key' for subsequent waxings, must be polished up with minimum pressure since it can easily be dragged off metals (which are generally not porous). During the final stages of cleaning / waxing it is even more important that one wears lint free cotton gloves to prevent acidic fingerprints becoming apparent under the wax at a later time.

Clean with 1 part Vulpex in 20 parts distilled water. Do Not soak the ivory but just wipe it over to clean off dirt. If the ivory is 'dry' in appearance paint it with almond oil and after 8 hrs, wipe it absolutely dry. Finish with Renaissance Wax.

Leather Products
When cleaning leather (or any water - sensitive material) Vulpex can be used in white spirit as a non-aqueous cleaner - 1 part Vulpex in 20 parts spirit. Although Vulpex can be diluted in IMS, white spirit is recommended for its slower evaporation rate that enhances the cleaning action especially where heavy materials like solid leather are heavily soiled with grease etc.

Oil Paintings
When cleaning oil paintings it is essential that Vulpex be diluted with white spirits (or a suitable petro-chemical solvent such as mineral spirits) and NOT water. Water could penetrate through to the canvas and create mould or fungus. The recommended dilution for cleaning oil paintings on canvas is 1 part Vulpex in 10 to 20 parts solvent.

1 part Vulpex in 15 to 20 parts white spirit, with a wipe-over from a rag dampened in clean white spirit to remove soap traces after cleaning. Saddlecloth will probably have to be totally immersed in the same solution and gently squeezed to loosen / remove the dirty grease. Immerse in clean white spirit afterwards, squeeze gently to remove excess white spirit and allow drying in horizontal plane with good airflow. After the above treatment, the leather may well feel 'dry' and stiffer, which means the natural greases have been removed by the cleaning. A good quality leather dressing (ie Pliantine Leather Dressing) may be appropriate at this point

Stone & Walls
Vulpex is particularly valued for cleaning murals and ornamented or hand-painted ceilings and demonstrates extraordinary powers to dissolve and emulsify fats, fatty oils, mineral oils, waxes, hydrocarbons and hydrogenates or chlorinated hydrocarbons. The resulting emulsions are remarkably stable, thus eliminating disposal problems. Brush application of Vulpex on stone speeds and enhances cleaning. Brushing helps to break down Oxidized dirt films and allows the solution better access to textured surfaces. Micro-fine cracks harbouring dirt are subjected to a deep-cleaning action rarely achieved with normal commercial cleaners. A final rinse or wipe with clean water neutralises the surface, leaving behind nothing to create future conservation problems. Vulpex must be diluted properly prior to use, the dilution factor is influenced by various site features, including extent and hardness of surface soiling and method of application. As an initial trial a blend of 1 part soap in 6 to 7 parts cold tap water (by' volume) is suggested. More water can be added if the soiling is light. For cleaning plaster-work we recommend 1 part Vulpex in 6 to 7 parts water. As a spirit soap, 1 part Vulpex in 10 to 20 parts solvent will be found effective. Dilution should be fixed so that scrubbing for only a few seconds produces satisfactory results after rinsing with clean water. Rinsing preferably by low-power spraying is essential to complete the process and to neutralise the surface.

Stripped Pine 
Vulpex can be used, but in a very diluted form 1 part Vulpex in 20 parts water. Rinse with clean water but Do Not use large amounts of water and dry thoroughly. Finish with Renaissance wax.

General Tips
As with all conservation applications it is important to ensure complete compatibility with the substrate being treated and any chemicals that may be applied as part of the ongoing preservation of the item. Any traces of the cleaning agent should be carefully removed from the surface of the treatment area before applying further chemicals thereby reducing the possibility of any adverse chemical reaction.

Vulpex concentrate keeps perfectly for several years. Store at room temperature. In winter site conditions, if gelling or separation occurs, the concentrate in its container should be warmed in hot water or by a radiator until the soap re-liquifies , before diluting with water.