Distilled water

Distilled water is purified water obtained by boiling water into steam and then condensing it back into liquid in a clean container. This process removes most impurities, minerals, salts, and contaminants, leaving behind pure H₂O.

Key Properties

Purity: Free from minerals, salts, and most microorganisms.

Neutral pH: Typically close to 7, unless exposed to air (which can lower pH slightly).

No additives: Unlike tap water, it contains no chlorine, fluoride, or dissolved solids.

Uses in Cosmetics & Skincare

1. Base for Formulations – Used in lotions, creams, toners, and serums as the main solvent.

2. Dilution of Active Ingredients – Safely dilutes actives like acids, extracts, and preservatives.

3. Ensures Product Stability – Reduces risk of unwanted chemical reactions that may happen with tap water.

4. Prevents Contamination – Low mineral content helps avoid product spoilage or instability.

5. Laboratory & Pharmaceutical Use – Common in labs and for medical-grade products.

Benefits

Enhances product safety and shelf life.

Prevents interference with pH-sensitive ingredients.

Maintains consistency in formulations.

Storage

Store in clean, tightly closed containers to prevent contamination.

Preferably in cool, dark places away from direct sunlight.