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We know you are not seeing your favorite shade right now--you're not imagining it. We're wrapping up development on a completely new color system that will upgrade our current foam. During this transition, most shades are temporarily out. We appreciate your patience and we can't wait to show you what's coming next.

True Sons - New Product Patch Test

True Sons New Product Patch Test

Updated April 2026

Super Important Stuff You Should Read Before Using Hair Dye Products

Please Read: Caution, Warning, and First Aid

Caution: This product contains ingredients which may cause skin irritation or allergic reaction in certain individuals.  A preliminary test according to accompanying directions should first be made. Temporary black henna tattoos may increase the risk of allergy. This product must not be used for dyeing eyelashes or eyebrows; to do so may cause blindness. This product may not be used on, in, or near your genital area.

Caution: It is recommended to perform a patch test on the inside bend of your elbow 48-hours ahead of each and every use in order to minimize the risk of an allergic reaction even if you have used coloring products before. Always use gloves to minimize exposure.

Patch Test - The Cotton Swab method: With mild soap and water, wash an area approximately 1 square inch on the inside bend of your elbow. Allow to dry. Take a cotton swab and dip into the bottle of dye and apply to the cleaned area. DO NOT USE THE SAME END DURING THIS PROCESS - Reverse the swab and do the same with the activator that is in the foamer bottle. Dab the same area as the dye.

Do not wash this area for 48 hours. When showering, protect with an adhesive bandage and remove it immediately after washing.

Examine the test area during the next 48 hours. If no reaction occurs, you are ready to dye. This test represents an important precaution. 

However, be aware that even if an allergy alert test has been carried out, you may still experience an allergic reaction when you dye your hair. The allergy alert test is not a guarantee to avoid future allergic reactions. Please consult a doctor if you have any doubts.

Warning: If during coloring, you experience any skin stinging, burning, rapidly spreading rash, dizziness, or faintness, shortness of breath and/or swelling of eyes/face, rinse immediately and discontinue use as this may be an indication of a more serious reaction. Immediately seek medical advice. If, during the days following application, you experience itching, redness, spots on the scalp or skin, swelling of the eyes and/or face, blisters or oozing of the scalp and/or skin, consult a doctor.

Hair colorants can cause an allergic reaction which, in some rare cases, may be severe. In case of an allergic reaction during application, rinse immediately and discontinue use. If, during the days following the application, you experience itching, redness, spots on the scalp or skin, swelling of the eyes and/or face, blisters or oozing of the scalp and/or skin, it is recommended that you consult a doctor immediately.

First Aid: If contents get in your eyes, flush with water. If on skin, wash off with soap and water immediately. If irritation occurs, consult a physician. If ingested, consult a poison control center or a physician. This product is not intended for use on eyelashes, eyebrows, or other areas where irritation may occur.

  • Inhalation
    • If inhaled, remove to fresh air. Get medical attention immediately if symptoms occur.
  • Eyes
    • If in eyes, rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Keep your eyes wide open while rinsing. Do not rub the affected area. Get immediate medical advice/attention.
  • Skin
    • In case of skin contact with liquefied gas, thaw frosted parts with lukewarm water. If in contact with skin, wash off immediately with soap and plenty of water for at least 15 minutes. May cause an allergic skin reaction. In the case of skin irritation or allergic reactions, see a physician.
  • Ingestion
    • If swallowed, clean your mouth with water and drink plenty of water.

Never give anything by mouth to an unconscious person. Do NOT induce vomiting. Call a physician.