How to Make Perfume Last 12+ Hours

Based on the information available, we do not have a specific ready-to-use perfume base product that is pre-mixed with a fixative and guarantees over 12 hours of longevity.

Achieving long-lasting fragrance typically depends on the composition of the fragrance oil itself, particularly the inclusion of ingredients known as fixatives. These are less volatile materials that help anchor the more volatile fragrance notes, allowing the scent to last longer on the skin.

To achieve the desired longevity of 12 hours or more, you would generally need to:

1. Select a high-quality fragrance oil or blend of aroma chemicals: The inherent longevity of the fragrance materials plays a significant role.
2. Incorporate fixatives into your fragrance blend: You can add specific fixative ingredients to your chosen fragrance oil or blend of aroma chemicals. Some common fixatives or ingredients with good tenacity include:
   • Resinoids/Absolutes: Such as Styrax Resinoid, Labdanum Absolute
   • Synthetic Musks: Such as Cosmone, Traseolide
   • Other highly tenacious chemicals: Such as Coumarin, Vetimoss, Cassiffix
3. Dilute the fragrance concentrate (fragrance oil + fixative) with a suitable solvent: Perfumer's alcohol is commonly used. The concentration of the fragrance concentrate in the final product also affects longevity. For 12+ hours, you might aim for Eau de Parfum (typically 15-20% fragrance concentrate) or Extrait de Parfum (typically 20-40% fragrance concentrate) levels.

Suggested Ingredients (based on search results) that can help with longevity:

• Coumarin
• Cosmone
• Vetimoss
• Styrax Resinoid
• Labdanum Absolute
• Tuberose Absolute
• Cassiffix
• Traseolide

You could also start with existing fragrance bases like Violet Base, Strawberry Base, Rhodinol Base, Raspberry Base, or Floral Background and add fixatives to them to enhance their longevity.

General Mixing Method:

1. Weigh your chosen fragrance oil or blend of aroma chemicals.
2. Add the desired fixative(s) to the fragrance oil/blend. The percentage of fixative used can vary widely depending on the specific material and desired effect, but often ranges from a small percentage up to 5-10% or more of the fragrance concentrate.
3. Mix the fragrance oil/blend with the fixative thoroughly. This is your fragrance concentrate.
4. Weigh your perfumer's alcohol (or other solvent).
5. Combine the fragrance concentrate with the perfumer's alcohol according to your desired concentration (e.g., 20g fragrance concentrate + 80g alcohol for a 20% concentration).
6. Mix well and allow the perfume to mature (macerate) for a period (usually a few weeks to a few months) in a cool, dark place for the scent to fully develop and the fixatives to integrate.

Keep in mind that achieving exactly 12 hours of longevity can be challenging and depends heavily on the specific fragrance notes used (citrus notes are less long-lasting than woody or resinous notes) and individual skin chemistry.