Here's why:
* It can damage the formula: Nail polish is a complex formulation of solvents, resins, pigments, and other additives. Adding alcohol can disrupt this balance.
* Poor results: Alcohol can change the consistency in an unpredictable way, leading to streaky, clumpy, or thin, runny applications. It might also dull the finish or affect the color.
* Short-term fix: While alcohol might initially seem to thin the polish, it can quickly evaporate, causing the polish to become even thicker and more unusable later.
What you *should* use:
* Nail Polish Thinner: This is the proper product to use. It is specifically formulated to restore the consistency of nail polish without damaging its formula. Look for thinners that are compatible with the type of nail polish you're using (e.g., nitrocellulose-based, water-based).
* Acetone (with caution): In a pinch, you can use *a very small* amount of pure acetone, but this is not ideal. It can also alter the polish's formula, but it's generally less damaging than alcohol. Use only a few drops at a time and test on a hidden area first.
How to properly use nail polish thinner:
1. Add a few drops of nail polish thinner to the bottle of thickened polish.
2. Roll the bottle between your hands (do not shake, as this can create air bubbles).
3. Test the consistency by applying a small amount to a nail or piece of paper.
4. Repeat if necessary, adding a few more drops of thinner until you achieve the desired consistency.
By using the correct products, you can keep your nail polish in good condition and ensure smooth, professional-looking manicures.