Damar Gum — These natural damar resin crystals are collected from fir trees. Crystals must be soaked in pure gum turpentine to produce traditional Damar Varnish, used on finished paintings as a transparent, removable high-gloss protective coating. Also useful as an ingredient in medium recipes.

Flow Dry Alkyd Medium — Sennelier's Flow Dry Alkyd Medium accelerates drying time and provides a creamy texture to oil paint, improving fluidity and increasing gloss. It resists yellowing. Ideally suited for glazes.

Gel 'N Dry — This is the gel version of Flow ’N Dry alkyd medium. Use it to speed drying and improve fluidity and gloss by adding 15–20% to paint. Suitable for impasto techniques, it comes in a 40 ml (1.4 oz) tube that travels well into the field for plein air painting.

Refined Safflower Oil — Sennelier offers the finest first-pressed safflower oil, purified to lower acidity while increasing clarity. Use it to increase oil fluidity and transparency, or in medium recipes. It won't yellow or alter the pigment's natural hue as linseed oil does.

Turner Medium — Based on Damar gum, Sennelier Turner Medium can be mixed with oil colors in any proportion. Turner Medium is particularly suited for work with fresh paints. It reinforces the cohesion of brush strokes, accentuates gloss, and it is useful for transparent washes and glazing.

Sennelier Turner Medium can be thinned with mineral spirits or turpentine.

Tuner Retouching Varnish — Use this light, fast-drying mineral spirit-based varnish to restore original brilliance and luminosity to colors that have dulled or sunken in, on unfinished works. Or use it as a temporary final picture varnish.

Universal Medium — Sennelier's Médium Universel is a colorless, liquid gloss medium that adds body and volume to the paste, ideal for glazing and "alla prima" painting techniques. It speeds drying, imparts a gloss that does not diminish noticeably during drying, and brightens colors.

This Universal Medium is also suitable for creating thin, flickering layers of color that dry quickly. Thin with mineral spirits or turpentine. Comes in a 75 ml (2.5 oz) glass bottle.