Impasto Medium


Product Description

Incredibly thick clear-gel medium. Add to oil colours to for extra ‘body’ without altering the colour.

Product Code: 017


Refined Safflower Oil,  Fumed Silica, Castor Wax, Cobalt Drier, Calcium Drier

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Safety Data Sheet

Product Application

Langridge Impasto Medium may be added to oil colours in quantities at the discretion of the artist. Mixed with oil colours, it may be applied with a brush or palette knife in thicker films than any other Langridge Medium.

Initially small additions will stiffen the handling of existing oil colours. As more medium is added, the oil colour will be suspended and extended forming a thick paste. When worked using a brush or palette knife the medium becomes slightly looser allowing for easy incorporation with colours.

The Safflower oil content in Impasto Medium is slow drying allowing for a wet-in-wet technique with very controlled manipulation of paint including soft blending. Transparent colours will display Translucency immediately and can be extended indefinitely to form thick glazes.

Langridge Impasto Medium has a high oil content and, as such, is a ‘fat’ medium. Due to it’s physical nature Langridge recommends not over painting Impasto medium with any other medium.

Dries to a satin finish.

Additional Product Information

What is Glazing?

Glazing is the application of a layer of transparent paint that sits on top of existing painted areas not unlike a layer of coloured film. The Transparent glaze can alter the colour of the painting beneath without obscuring the image.

The Damar resin content in Langridge Glaze Medium gives brilliance to these glazes and allows for extraordinary luminosity as light passes through the glaze to a traditionally white or bright base colour. It may be easier to describe a glaze as a non-reversible (due to the oil content), non-yellowing varnish with clarity and luminosity as opposed to an oil medium with a resin addition.

Very refined modeling is achieved using glazes on top of broad underpainting which has been employed to mark out the basic form in light and shadow. For artists who wish to apply clean, bright glazes, it is recommended choosing transparent pigment based colours.

Because Langridge Glaze Medium is highly fluid it can be used for the controlled application of fine detail, however it is versatile enough to be used for broader techniques such as a watercolour style ‘wash’ effects without losing richness and vibrancy. Because of the damar content broad ‘washes’ using Glaze Medium have more ‘slip’ than Langridge Painting Medium in application.

Reason for non- drying films

When wanting to dilute Langridge Glaze Medium, use only mediums with a solvent content of Gum Turpentine. Do not use mediums containing petroleum distillates, including Mineral Turpentine, Low Toxic Solvent, “Artists Turpentine” (contains petroleum distillate), White Spirit, etc. (See…) The artist can also dilute purely with Gum Turpentine, although Langridge recommends a maximum dilution ratio of 1 part Gum Turpentine to 3 parts Langridge Glaze Medium.

Working Properties


For best results thin with Distilled Gum Turpentine. However, Artists White Spirit or Langridge Odourless Solvent may be substituted. The use of the latter solvents will tend to reduce the fatness of stroke and the oil film will dry with less richness due to the partial destruction of the paint film.


Langridge Impasto Medium is a clear paste with a characteristic safflower oil odour. Very fresh medium may exhibit a bluish-grey cast. The colour of the medium will not effect the oil colours with which it is mixed.

Clean Up

Clean brushes with any artists’ solvent (eg Gum Turpentine, Low Toxic Solvent, etc.). For further washing apply a small quantity of Marseille or other pure olive oil soap and massage the bristles of the brush to release any remaining colour. Wash thoroughly in warm water. Leave to fully dry before using for oil colours.

Drying Times

24-48 hours to touch dry. Any airflow over the surface will evaporate the solvent more rapidly which will reduce drying times. Full film drying 3-6 months in less than 3mm thickness.

Available in:

120ml (0171), 300ml (0173), Litre (017L), 4 Litre (0174), 20 Litre (0172)