1. Formula & Ingredients:
* "Free-From" Labels: Look for polishes labeled "3-Free," "5-Free," "7-Free," "9-Free," or higher. These indicate the polish doesn't contain some of the more harmful chemicals. Common chemicals to avoid include:
* Formaldehyde: A known carcinogen and irritant.
* Toluene: A solvent that can cause neurological issues.
* Dibutyl Phthalate (DBP): Linked to reproductive issues.
* Formaldehyde Resin: An allergen.
* Camphor: Can be drying and irritating.
* Ethyl Tosylamide: An antibiotic that is known to cause allergic reactions.
* Xylene: Can cause dizziness, headaches, and nausea.
* Ingredients to Look For:
* Plasticizers: Help polish be flexible and less prone to chipping (safer alternatives to DBP exist).
* UV Absorbers: Prevent colors from fading in sunlight.
* Solvents: Essential for keeping the polish liquid. The type of solvent can affect drying time and smell.
2. Finish & Opacity:
* Finish:
* Creme: Smooth, glossy, and opaque.
* Jelly: Sheer, translucent, and squishy-looking.
* Glitter: Contains glitter particles for a sparkly effect.
* Matte: No shine, a flat, velvet-like finish.
* Shimmer/Pearl: Subtle sparkle with a pearlescent sheen.
* Metallic: Highly reflective, resembling metal.
* Holographic: Creates a rainbow-like effect in the light.
* Opacity:
* Sheer: Allows the natural nail to show through, often requiring multiple coats.
* Semi-Sheer: Provides a hint of color but still allows some visibility of the nail.
* Opaque: Provides full color coverage in one or two coats.
3. Longevity & Wear:
* Chip Resistance: A good polish should resist chipping for at least a few days. Reading reviews can help determine a polish's chip resistance.
* Dry Time: Consider how quickly the polish dries. Faster-drying formulas are more convenient.
* Color Retention: The color shouldn't fade or become dull quickly.
* Application: A good polish applies smoothly and evenly without streaking.
4. Brush Quality:
* Shape: Flat, rounded, or curved brushes are common. Choose one that suits your nail shape and application style. Wider brushes are good for covering the nail quickly.
* Bristle Density: Densely packed bristles help distribute the polish evenly.
* Flexibility: The brush should have some flexibility to conform to the shape of your nail.
5. Color & Pigment:
* Color Choice: Choose colors that complement your skin tone and personal style. Consider the occasion and season.
* Pigmentation: The polish should have good pigment so the color is true to the bottle and provides good coverage.
6. Brand Reputation & Reviews:
* Research Brands: Look for established and reputable brands known for quality and consistent formulas.
* Read Reviews: Check online reviews to see what other users say about the polish's performance, longevity, and application.
* Social Media: Look at swatches and reviews on social media platforms like Instagram and YouTube.
7. Price:
* Budget: Determine your budget. Drugstore brands can offer good quality at affordable prices, while high-end brands may offer more unique colors or specialized formulas.
* Value: Consider the overall value. A polish that lasts longer and applies well might be worth a slightly higher price.
8. Additional Tips:
* Base Coat: Always use a base coat to protect your nails from staining and improve the adhesion of the polish.
* Top Coat: Apply a top coat to seal the polish, add shine, and further protect against chipping.
* Thin Coats: Apply thin, even coats of polish. Multiple thin coats are better than one thick coat, which is more likely to chip.
* Proper Storage: Store your nail polish in a cool, dark place to prevent it from thickening or separating.
* Try Before You Buy (if possible): Some stores have testers available, allowing you to try the color and consistency of the polish before purchasing.
* Vegan & Cruelty-Free: If this is important to you, look for polishes labeled as vegan and cruelty-free. "Cruelty-free" means the polish wasn't tested on animals. "Vegan" means it doesn't contain any animal-derived ingredients.
By considering these factors, you can choose nail varnishes that will give you beautiful, long-lasting, and healthy-looking nails.