Oil pastels are a versatile and beloved art medium, offering a unique combination of the richness of oil paint and the direct application of pastels. Composed of pigment, a non-drying oil, and wax binder, they provide vibrant colors and a creamy texture that allows for easy blending and layering [4, 12]. Unlike soft pastels, oil pastels do not produce dust and can be applied to a wide range of surfaces without special preparation, making them an appealing choice for both beginners and experienced artists [2, 6, 27].

Whether you're looking to create smooth gradients, add texture, or achieve painterly effects, mastering oil pastel techniques can unlock a new level of artistic expression. This guide will delve into the fundamentals, from basic application and blending to advanced techniques, popular brands, and essential care tips.

Understanding Oil Pastels: Composition and Characteristics

Oil pastels are distinguished by their unique composition. The key ingredients are:

• Pigment: Provides the color, with higher quality pigments leading to brighter and more lightfast results [12].
• Non-drying oil: Acts as a binder, giving the pastels their characteristic creamy and buttery consistency. This oil content is lower than in oil sticks [2, 6, 12].
• Wax binder: Helps the pastel maintain its stick form and aids in its ability to spread over a surface [12].
• Additives: Some manufacturers include stabilizers or fillers to modify texture and other properties [12].

The non-drying nature of the oil binder means that oil pastels remain workable indefinitely until sealed, which sets them apart from oil sticks that dry and cure like oil paint [2, 25, 26]. This characteristic makes them ideal for immediate sketching and direct application on various surfaces like paper, canvas, wood, and even metal [2, 27]. However, their non-drying nature also means that finished works are more susceptible to smudging and require protection, often with a fixative or by framing under glass [2, 15, 28].

Essential Oil Pastel Techniques for Expressive Art

Exploring various techniques can dramatically enhance your oil pastel artwork. Here are some fundamental and popular methods:

Blending

Blending is crucial for creating smooth transitions and soft effects. Several methods can be employed:

• Finger Blending: The most intuitive method, using your fingers to gently rub colors together. It offers direct control and is excellent for larger areas [17, 21, 40]. Keep a paper towel or wipes handy to clean your fingers and prevent color muddying.
• Blending Tools: Tools like tortillons (blending stumps), cotton swabs, or soft cloths can be used for more precise blending, especially in detailed areas [1, 17, 21].
• Oil or Solvents: Using a small amount of baby oil, linseed oil, or a solvent like Gamsol with a brush or cotton swab can create a painterly, almost watercolor-like effect [1, 7, 14, 17, 23, 33]. This technique dissolves the oil binder, allowing colors to flow smoothly.
• Layering: Applying one color over another and then blending them creates depth and new hues. Start with lighter pressure and gradually build up layers [7, 13, 17].

Sgraffito

Italian for "to scratch," sgraffito involves scratching into a layer of applied pastel to reveal the color underneath [1, 3]. Apply a base color, then a contrasting top layer, and use a sharp object (like a toothpick, palette knife, or stylus) to scratch away the top layer, creating lines, patterns, or revealing hidden colors [1, 3, 22].

Impasto

Oil pastels' semi-soft nature allows for the impasto technique, where thick layers of pastel are applied to create a textured, three-dimensional effect directly on the surface [3].

Wax Resist

This technique uses the water-repellent property of wax. Apply oil pastels to paper, then add a wash of watercolor or thinned acrylic paint over them. The paint will resist the waxy areas, creating interesting textures and patterns, ideal for effects like scales or patterns in wildlife art [1].

Glazing

Glazing involves applying a layer of oil medium or turpentine over the pastel to create a smooth, transparent glaze effect. This can be used to blend colors or deepen tones [1].

Stippling and Scumbling

• Stippling: Creating an image or shading using small dots. When colors are placed close together, they can optically blend from a distance [7, 22, 30].
• Scumbling: Applying color in controlled, scribbled, or swirled marks. This technique allows the underlying layers of color to peek through, adding depth [7, 10, 22].

Choosing the Right Oil Pastels: Brands and Grades

The market offers a wide range of oil pastel brands, catering to different budgets and skill levels. Generally, they can be categorized into student-grade and artist-grade.

Artist-Grade (Professional):

• Sennelier: Known for their exceptionally soft, creamy texture, rich pigments, and high lightfastness. They are often compared to lipstick in consistency and are a favorite among professionals. However, they are more expensive and can be used up quickly [5, 8, 9, 20, 35].
• Holbein Artist's Oil Pastels: Recommended by the Oil Pastel Association of America, Holbein pastels are slightly firmer than Sennelier but still offer excellent smoothness and blendability. They are also pricey [5, 8, 9, 20].
• Caran d'Ache Neopastels: Highly regarded for their smoothness, blendability, and vibrant colors. They are a good mid-to-high range option, slightly firmer than Sennelier and Holbein but still very workable [5, 8, 9, 20].

Student-Grade (Beginner-Friendly):

• Mungyo Gallery Artists' Soft Oil Pastels: Often recommended as a great balance between quality and price. They have a smooth, creamy texture that's easy to blend, making them ideal for beginners. They come in extensive color ranges [5, 9, 16, 35].
• Pentel Oil Pastels: Known for being firmer and offering good control, which is beneficial for beginners learning techniques like pressure control and layering. They are also budget-friendly [16, 24, 35, 38].
• Sakura Cray-Pas Expressionist: A good step up from basic student sets, offering richer color and a smoother glide. They blend well and are manageable for beginners [9, 16, 38].
• Crayola Oil Pastels: An affordable and widely available option, making them a convenient choice for absolute beginners or children starting out [24].

Many artists find success using a combination of brands to leverage the unique properties of each. Testing individual colors ("open stock") before committing to a set is a good strategy [8].

Tips for Using Oil Pastels

• Surface Choice: Oil pastels adhere well to various surfaces, but sanded paper or paper with a good tooth can provide better grip for layering and blending [1, 6, 27].
• Layering: Build colors gradually. While oil pastels allow for extensive layering, be mindful that too many layers can lead to a greasy sheen or smudging, especially with softer brands [26].
• Preventing Smudges: Keep a clean sheet of paper between your hand and the artwork to avoid accidental smudging [13].
• Cleaning Oil Pastels: Regularly clean your oil pastel sticks with a paper towel or scrap paper to remove excess pigment and prevent color mixing [19, 39, 41].
• Protecting Your Artwork: Since oil pastels never fully dry, they are susceptible to smudging. Consider using a fixative spray designed for oil pastels. Archival varnishes can add an extra layer of protection. Framing artwork behind glass with a mat to keep it from touching the glass is the most common and effective way to preserve oil pastel works [15, 28, 29, 31].

Frequently Asked Questions (FAQ)

Are oil pastels toxic?

Most oil pastels are non-toxic, making them safe for artists of all ages, including children. However, it's always best to check the manufacturer's information for specific product details [12].

Can you blend oil pastels with water?

While oil pastels contain oil, some can be activated with water for watercolor-like effects, especially water-soluble oil pastels. However, traditional oil pastels are not typically blended with water; instead, oils or solvents are used for blending [1].

How do oil pastels differ from oil sticks?

Oil pastels are made with pigment, wax, and a non-drying oil, remaining permanently workable. Oil sticks, on the other hand, are essentially oil paint in stick form, containing pigment, drying oil, and a small amount of wax, allowing them to dry and cure like traditional oil paints [2, 25, 26, 32].

How do you seal oil pastels?

To seal oil pastels, apply multiple light coats of a fixative spray specifically designed for oil pastels. Allow it to dry completely. Some artists also apply a clear acrylic varnish over the fixative for added protection or a desired finish. Framing under glass is the most recommended method for long-term preservation [15, 28, 29, 31].

Conclusion

Oil pastels offer a rich, tactile, and vibrant medium for artistic exploration. From simple blending techniques to more complex methods like sgraffito and glazing, there's a vast array of possibilities to explore. Whether you're a beginner choosing your first set or an experienced artist looking to refine your skills, understanding the characteristics of different brands and mastering various techniques will help you create captivating oil pastel artwork. Remember to experiment, practice, and most importantly, enjoy the process!