Making Citronella Oil Mosquito Repellent Spray with Long-lasting Scent using Flora Fix

Asked by: antnito On: April 29, 2016 Product Type: Cosmetics Answered

Question

I want to make a mosquito repellent spray using Citronella Oil and need the scent to last longer. I was recommended to use Flora Fix as a fixative. Could you provide a formula and instructions for making 100 ml of this spray, including the recommended usage percentage for Citronella Oil for effectiveness and the role of Flora Fix in the formulation?

Answer

Hello,

Regarding mixing Citronella Oil to make a mosquito repellent spray and wanting the scent to last longer, as suggested by our staff using Flora Fix as a fixative, you can do this by mixing it with an alcohol and water base. Essential oils do not dissolve in plain water, so alcohol or another solvent is needed to help disperse them.

A general guideline for mosquito repellent sprays is to use about 5-10% essential oil of the total volume for effectiveness. Adding Flora Fix will help the scent last longer.

Here is a basic formula for making 100 ml of mosquito repellent spray:

Ingredients:

  • Citronella Oil - 5-7 ml
  • Flora Fix - 1-3 ml (helps fix the scent and provides slight moisturizing)
  • Alcohol (e.g., Ethanol 95% or Isopropyl Alcohol) - 70 ml
  • Clean Water (Distilled or Filtered Water) - Remaining amount (approx. 20-24 ml)

Instructions:

  1. In a clean spray bottle, gently pour in the alcohol first.
  2. Add the Citronella Oil and Flora Fix to the alcohol. Stir or shake gently to mix well.
  3. Add the clean water until the desired volume is reached.
  4. Close the spray bottle tightly. Shake the bottle gently before each use to ensure the essential oil is well dispersed.

Additional Recommendations:

  • This ratio is a basic guideline. You can slightly adjust the amount of Citronella Oil based on the desired scent intensity, but do not exceed 10% for skin safety.
  • Flora Fix will help the scent last longer, but the 3-4 hour duration may vary depending on environmental factors such as temperature, ventilation, and activity.
  • Always test the spray on a small area of skin before applying it widely to check for any allergic reactions.
  • Avoid spraying into eyes, mouth, or on open wounds.
  • Store in a dark, cool place, away from children and pets.

Hope this formula is helpful for making your mosquito repellent spray!

Answer Update
Updated Review: May 2026

This section was added after reviewing the original answer against current product availability and formulation knowledge at the stated point in time.

Update 2026-05-24: The general concept is still valid: Citronella Oil is oil-soluble and should not be mixed directly into plain water without alcohol or a solubilizer. For a clearer, more stable water-based spray, current catalog guidance supports pre-mixing the essential oil/fragrance with Flora Solve™ Clear before adding it to water or the main formula.

Please adjust the old formula cautiously: current Flora Fix™ guidance is lower than the old 1–3% suggestion for leave-on/body-care use, so keep Flora Fix™ within the current recommended range and run a small stability/skin patch test first. Also, do not treat scent longevity as the same as guaranteed mosquito-repellent protection time.

If the main goal is reliable mosquito-repellent performance rather than only citronella scent, consider ingredients currently listed specifically for insect-repellent formulas, such as Euca-Kill™ or Grapefruit Oil (Standardized For Insect Repellent), and follow their current usage-rate and safety guidance.