Hormones, Health & Skin
Where hormones, health and beauty meet — thyroid, PCOS, the menstrual cycle, menopause, sleep, stress and diet — and exactly how each shows up in your skin, hair and nails. Sourced to the medical literature.
Hormones Skin
Estrogen & Skin: How Falling Levels Drive Collagen Loss
Estrogen stimulates collagen synthesis in the dermis.
How Your Menstrual Cycle Affects Your Skin Week by Week
Your skin changes measurably across the menstrual cycle as estrogen peaks at ovulation then falls.
PCOS & Beauty: Acne, Hair Loss & Excess Hair — What to Know
PCOS causes acne, hirsutism, androgenetic alopecia.
Perimenopause Skin Changes: What Happens & How to Adapt
Perimenopause causes measurable collagen loss, dryness, thinning.
How Thyroid Problems Affect Your Skin, Hair & Nails
Thyroid disorders cause distinct, recognizable changes to skin, hair, and nails.
Pregnancy Beauty
Melasma During Pregnancy: Why It Happens & How to Treat It
Pregnancy melasma is caused by hormonal surges that overstimulate melanocytes.
Pregnancy-Safe Retinol Alternatives That Actually Work
Bakuchiol, azelaic acid, niacinamide, and vitamin C are the most evidence-backed pregnancy-safe alternatives to retinol.
Beauty Treatments to Avoid During Pregnancy (& Safe Swaps)
Retinoids, hydroquinone, high-concentration salicylic acid, and elective laser or injectable treatments should be avoided during.
Sleep Stress Skin
Cortisol Face: How Chronic Stress Shows Up on Your Skin
Chronic stress raises cortisol, degrading collagen and causing puffiness.
What Lack of Sleep Does to Your Skin: The Science
Lack of sleep impairs skin barrier function, reduces collagen synthesis, elevates cortisol.
How Stress Affects Your Skin, Hair & Nails — and What to Do
Stress triggers cortisol and neuropeptide release that worsens acne, causes hair shedding, inflames skin conditions.
Diet Skin Hair
Anti-Inflammatory Diet for Clear Skin: What to Eat
A Mediterranean-style low-glycemic diet rich in omega-3s, polyphenols.
Collagen Supplements for Skin: Do They Actually Work?
Yes — hydrolyzed collagen peptides improve skin hydration, elasticity, and wrinkle depth.
Foods That Cause Acne: What the Research Actually Shows
High-glycemic foods and dairy — especially milk.
The Gut-Skin Connection: How Your Microbiome Affects Skin
Gut microbiome dysbiosis drives skin inflammation through immune, metabolic, and barrier signaling.
Is Hyaluronic Acid Safe to Use Every Day?
Yes — topical hyaluronic acid is safe for daily use on all skin types.