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Skin allergies manifest as itchy, red patches, which are triggered by certain allergens. Learn more about the common triggers and causes here.
Most hair dyes contain an ingredient called para-phenylenediamine or PPD for short. This particular ingredient is included in hair dyes since this is responsible for giving coverage to hair and making it look darker. Also, PPDs are mostly found in permanent hair dyes. However, this ingredient can cause an allergic reaction to hair dye in […]
Reviewed by Martha Juco, MD • Apr 05, 2024
advertisementadvertisementadvertisementThe Hello Doctor panel of medical experts and reviewers is composed of a diverse range of board-certified physicians, health professionals, and specialists who help build and strengthen our continuously growing content library according to their area of expertise. They ensure that each piece of content is correct, up-to-date, and reflects the latest in evidence-based research, scientific and health information. Our experts work tirelessly to help provide you with helpful, accessible, and trustworthy health knowledge. They meet you wherever you may be on your journey, to empower you to make the best choices for your health and wellness.
Meet The Team
Elfred Landas, MD
General Practitioner • Maxicare Primary Care Center
Martha Juco, MD
Aesthetics
