Best Gloss Additives for Paint: Top Varnishes and Additives for Finishes
Choosing the right gloss additive or varnish can dramatically affect the look, protection, and durability of paintings and craft projects. This guide highlights five widely used products that enhance gloss, improve flow, and provide durable finishes across indoor and outdoor surfaces. Each option offers distinct strengths—from archival, non-yellowing finishes to products that help latex paints spray like oil-based formulas. Read on to compare these gloss-enhancing solutions and how they might fit your next project.
| Product | Brand | Notes |
|---|---|---|
| Liquitex BASICS Gloss Varnish, 250ml | Liquitex Store | Permanent gloss varnish; can mix with matte to vary sheen; dries clear, non-yellowing |
| Flood Floetrol 1 qt. Clear Latex Paint Additive | Flood Store | Improves brush marks, allows latex to spray like oil-based; mildew resistant |
| Rust-Oleum Painter’s Touch Latex Gloss Clear, Quart | Rust-Oleum Store | Water-based, low odor; durable protection; wide surface compatibility |
| Glitter Paint Additive Silver Holographic | Kigeli Store | 600+ grams, mixes with paint; creates laser-like glitter effect; durable with PET |
| Liquitex BASICS Gloss Fluid Medium, 250ml | Liquitex Store | Improves flow; adds gloss; ACMI certified for safe educational use |
The five products below are chosen for their relevance to a gloss-focused painting workflow, from clear gloss varnishes to additives that boost flow and spread. Each section provides a concise overview of features, typical uses, and what to consider before purchasing. The goal is to help readers compare how each product might serve different project goals—protective finishes, enhanced gloss, easier application, and specialized effects.
Liquitex BASICS Gloss Varnish Overview

Liquitex BASICS Gloss Varnish provides a permanent gloss protective layer for finished paintings. It dries to a clear, non-yellowing finish, helping guard against UV exposure and surface abrasion. A key benefit is the option to mix with matte varnish to adjust the final sheen, giving artists control over texture and appearance. The varnish is designed to preserve color integrity over time, making it a practical choice for educational settings and studio work where durability matters.
Liquitex BASICS Gloss Fluid Medium

Liquitex BASICS Gloss Fluid Medium is designed to improve the flow of color and increase transparency, enabling smoother blending and richer gloss when mixed with Basics acrylic colors. It’s ACMI certified and safe for educational use, making it suitable for classrooms and hobbyists who want to preserve color brightness while extending working time. The medium can be combined with colors to achieve high-gloss, glassy finishes without sacrificing vibrancy.
Flood Floetrol Clear Latex Additive

Floetrol is a latex paint additive that fortifies acrylic and latex paints to improve performance and reduce brush marks. It allows latex paint to spray more smoothly, breathing life into projects that require spray application. The product also helps resist mildew growth, supporting a fresh appearance in environments with higher humidity or less ventilation. It’s a versatile option for wall projects, crafts, and decorative finishes where a wood- or metal-safe gloss sheen is desired.
Rust-Oleum Painter’s Touch Gloss Clear

Rust-Oleum Painter’s Touch Latex Gloss Clear offers broad surface compatibility for indoor and outdoor projects on wood, metal, plaster, masonry, and unglazed ceramic. The water-based acrylic formula is low odor and designed to resist chips while providing durable protection. With coverage up to 120 square feet and a fast dry-to-touch time, it suits projects that demand quick completion without sacrificing gloss or protection.
Glitter Paint Additive Silver Holographic

This glitter additive delivers a high-visibility holographic shine when mixed with latex paint. Each 500-gram bag provides ample material to create layered, laser-like glitter effects across walls and crafts. The product uses PET polyester, offering strong reflectivity and resistance to acids, alkalis, and high temperatures. It’s compatible with various latex paints and is designed to remain luminous without degrading the substrate over time. Ideal for feature walls, art installations, and event aesthetics.
Buying Guide: Gloss Additives And Finishes
- Purpose and final look: Gloss varnishes provide a protective sheen and color clarity, while gloss fluid mediums optimize flow and blending for painting. Consider whether you want a durable clear coat, a flow-enhancing additive, or a decorative glitter effect.
- Compatibility: Confirm base compatibility (acrylic, latex, oil-based where appropriate) and surface type (wood, metal, canvas, plaster). Some products are designed specifically for latex or acrylic systems and may not perform identically across all mediums.
- Drying time and odor: Some water-based gloss products dry quickly with low odor, suitable for indoor use and spaces with limited ventilation. Others may have longer cure times; plan accordingly for your project timeline.
- Safety and certifications: For educational settings or family use, opt for products with safety certifications (like ACMI) and low VOC formulations when possible. This reduces exposure during application and drying.
- Finish versatility: If you anticipate needing to adjust gloss levels after application, consider varnishes that mix with matte products or gloss mediums that adjust sheen without compromising color integrity.
- Durability and environment: Outdoor projects demand weather-resistant options with strong UV stability. For interiors, emphasize scratch resistance and stain protection depending on location and use.
- Application method: Some products are brush-applied varnishes, while others are formulated for spraying. Choose based on your toolset and preferred workflow to minimize brush marks or texture changes.
- Glitter and decorative effects: Glitter additives require careful mixing and testing to avoid uneven distribution and settling. Always test a small area to preview the final appearance and ensure adhesion.
Gloss additives and varnishes offer a spectrum of options for protecting and enhancing artwork and projects. By aligning product selection with project goals—whether for archival protection, smoother application, or decorative effects—creators can achieve professional finishes with predictable results. Use the buying guide as a reference to tailor choices to your painting style, surface type, and environment.