In your 40s, skin can suddenly turn red, itchy, flaky, or reactive, sometimes in random places, and most women assume it is just aging or blame their skincare. But the estrogen and progesterone shifts of perimenopause can change how mast cells release histamine at the skin barrier, which means the trigger may be happening inside the body, not inside the bottle. We dive deeper into this in the Biohacking Beauty Podcast with Dr. Carrie Jones. We also chat about why a retinoid you have used for years can suddenly irritate your skin, why wine hits so differently in your 40s, and the overlooked lab that could explain hair loss and fatigue. Dr. Carrie Jones, ND, FABNE, MPH, MSCP, is a naturopathic physician who completed a two-year residency in women's health and endocrinology, is board certified through the American Board of Naturopathic Endocrinology, and is a Menopause Society Certified Practitioner. She was the first medical director for Precision Analytical (the DUTCH Test) and the first head of medical education at Rupa Health. She has more than 20 years of experience in women's health and hormones and hosts the Hello Hormones podcast. What’s Discussed: (00:21) Why skin can suddenly turn red, itchy, and reactive in your 40s. (02:20) Why a retinoid you have used for years can start irritating your skin in perimenopause. (06:00) How mast cells and histamine create redness, welts, and itching that seem random. (09:43) How bone broth and fermented foods can add to an already full histamine bucket. (12:01) Why wine affects your liver, hormones, and skin differently in perimenopause. (16:59) Alcohol-free ways to wind down at night, from holy basil tea to magnesium. (20:50) What it means if an antihistamine before bed helps you wake up feeling better. (23:28) Why progesterone is often the first hormone to drop and how that affects mast cells. (27:46) The overlooked histamine trigger that can worsen PMS and skin, plus the biggest lever of all. (35:01) Why ferritin belongs on your blood work, how low is too low, and when supplements are not enough. (43:27) What to ask your doctor for, so you leave with more than another cortisone cream. (48:27) Rapid fire: estrogen dominance, seed cycling, red wine, and the one thing every woman over 40 should stop doing. Listen to this episode of Biohacking Beauty before you blame your next flare on aging or your skincare routine. Resources Mentioned: Mira Hormone Monitor: miracare.com Find more from Young Goose: Use code PODCAST10 to get 10% off your first purchase, and if you’re a returning customer use the code PODCAST5 to get 5% off at younggoose.com Instagram: @young_goose_skincare Find more from Dr. Carrie Jones: Website: drcarriejones.com Instagram: @dr.carriejones YouTube: Dr. Carrie Jones Podcast: Hello Hormones with Dr. Carrie Jones