arq. × Skin
Skin · Routes to the Skin Truth Panel

Your acne is a blood result, not a skincare problem.

Dr
Medically reviewed by arq. physicians
Board-certified doctors · Last reviewed April 2026 · Evidence-based content

Cystic acne, melasma, and premature ageing track back to androgens, insulin, and inflammation. Your dermatologist reads the markers, then writes the protocol — compounded tretinoin, isotretinoin (if clinically indicated), and what to stop using.

100+ biomarkers
Dedicated physician
Delivered to your door
Your next step

Pick the door. Meet a real Indian doctor.

Every panel includes a 15–20 minute video consult with a specialist — read against South Asian-calibrated ranges. The AI works invisibly. The doctor does the medicine.

Not sure which one? Start at the arq. front door
The problem

Dermatology treats the surface

Acne keeps coming back. Tretinoin helps temporarily. Antibiotics stop working. Your dermatologist never asks: why is your skin breaking out?

Skin Insights
Of persistent adult acne is hormonal
80%
Of PCOS cases with acne from insulin resistance
40%
Most dermatologists who test hormones
Rare
The science

Markers we read for Skin

These biomarkers reveal the root causes — and what actually works to fix them.

DHEA-S
Adrenal androgens drive sebum production and acne.
Free Testosterone
Bound + unbound; elevated levels trigger breakouts.
Fasting Insulin
High insulin resistance in 40% of PCOS acne cases.
TSH
Thyroid dysregulation worsens hormonal acne.
Vitamin D
Critical for immune response; deficiency impairs healing.
Zinc
Essential for skin barrier and immune defense.
Why skin issues persist despite topicals
Persistent acne, dull skin, and premature aging often have internal causes your dermatologist never measures:
High insulin spikes → Sebum production increases, pores clog
Thyroid dysfunction → Dry, flaky, compromised barrier
Iron & B12 deficiency → Pallor, poor wound healing
Vitamin D deficiency → Impaired skin repair, weak immunity
Hormonal imbalance (DHEA-S, testosterone) → Cystic breakouts along jawline
The fix: Test hormones, inflammation, and vitamins before committing to tretinoin, antibiotics, or endless topicals. Most skin clears within 12-16 weeks once the internal root is treated.
Biomarker mapping

Skin-Hormone Connection

These biomarkers reveal the root causes of acne, dullness, aging, and pigmentation. Test them. Fix them. Clear skin follows.

Biomarker Skin Manifestation Optimal Range Treatment if Abnormal
Testosterone/DHT Hormonal cystic acne, oily skin, jawline breakouts M: 250–1100 ng/dL | F: 15–70 ng/dL Spironolactone, dietary changes, inositol
Fasting Insulin Sebum overproduction, widespread acne, inflammation 2–12 mIU/L (fasting) Low-glycemic diet, exercise, metformin, inositol
DHEA-S Adrenal acne, oily forehead, hormonal fluctuation M: 160–453 µg/dL | F: 65–380 µg/dL Stress management, adaptogens, medical referral if extreme
Cortisol Inflammation, slow healing, stress-triggered breakouts 8am: 10–20 µg/dL Sleep optimization, stress reduction, meditation
TSH / FT3 / FT4 Dryness, flakiness, dullness, slow healing TSH: 0.4–4.0 | FT3: 2.3–4.2 | FT4: 0.8–1.8 Levothyroxine if hypothyroid, dietary iodine/selenium
Vitamin D Weak immunity, poor healing, acne, inflammation 30–100 ng/mL (optimal: 50+) Vitamin D3 supplement, 2000–4000 IU daily
Ferritin Pallor, hair loss, dullness, slow wound healing 30–400 ng/mL (optimal: 70–100) Iron supplementation, red meat, spinach, lentils
B12 Pallor, fatigue, slow healing, neurological issues 200–900 pg/mL (optimal: 500+) B12 injections, oral supplements, or dietary sources
hsCRP Systemic inflammation, acne, premature aging <1.0 mg/L (optimal: <0.5) Omega-3, anti-inflammatory diet, exercise
Zinc Weak immunity, acne, poor healing, alopecia 70–120 µg/dL Zinc supplementation, oysters, beef, legumes
Diagnosis framework

Skin Condition → Root Cause

Not all acne is the same. Find yours—then test and treat the biomarker behind it.

Hormonal Acne (Cystic, Jawline)
Likely biomarker: Elevated testosterone/DHT or DHEA-S
Test: Free testosterone, DHEA-S, FSH/LH
Internal treatment: Spironolactone, inositol, low-glycemic diet
Timeline: 8–12 weeks for 70% clearance
Dry, Flaky Skin
Likely biomarker: Low vitamin D, hypothyroidism, or poor iron
Test: TSH/FT4, vitamin D, ferritin
Internal treatment: Vitamin D3, levothyroxine if needed, iron repletion
Timeline: 6–10 weeks for barrier restoration
Premature Aging (Fine Lines, Loss of Glow)
Likely biomarker: Elevated cortisol, low vitamin D, chronic inflammation (hsCRP)
Test: Cortisol, hsCRP, vitamin D, antioxidant panel
Internal treatment: Stress management, anti-inflammatory diet, omega-3, vitamin D
Timeline: 10–16 weeks for visible improvement
Hyperpigmentation (Dark Spots, Melasma)
Likely biomarker: Chronic inflammation (hsCRP), low vitamin D, hormonal imbalance
Test: hsCRP, vitamin D, estrogen/progesterone (if cyclical)
Internal treatment: Vitamin D repletion, anti-inflammatory diet, sun protection
Timeline: 12–20 weeks (slowest to fade)
Adult-Onset Acne (After 25)
Likely biomarker: Insulin resistance, stress (cortisol), gut dysbiosis
Test: Fasting insulin, HOMA-IR, cortisol, inflammatory markers
Internal treatment: Low-glycemic diet, stress management, probiotics
Timeline: 8–12 weeks with dietary adherence
Hair Thinning + Skin Issues
Likely biomarker: Iron deficiency (ferritin <30), zinc deficiency, thyroid imbalance
Test: Ferritin, serum zinc, TSH/FT4, B12
Internal treatment: Iron repletion, zinc supplementation, thyroid optimization
Timeline: 12–20 weeks (hair cycle is slow)
Evidence base

Research: Why Internal Testing Matters

1. Insulin Resistance & Acne
Elevated fasting insulin (HOMA-IR >2.0) increases sebum production and systemic inflammation. Women with PCOS show 40% higher acne rates when insulin resistance is present. High-glycemic diets spike insulin; low-glycemic eating reduces acne by 30–50% in 8–12 weeks.
2. Androgens (DHEA-S, Free Testosterone) & Hormonal Acne
DHEA-S and free testosterone directly trigger sebaceous gland activity. Women with elevated androgens (even within "normal" range) experience cystic breakouts along the jawline, chin, and neck. Spironolactone blocks androgen receptors; combined with dietary changes, clears 70–80% of hormonal acne in 12–16 weeks.
3. Vitamin D Deficiency & Impaired Skin Repair
Vitamin D (<30 ng/mL) impairs wound healing, weakens skin barrier, and increases acne-causing bacterial growth. Vitamin D repletion (2000–4000 IU daily) restores antimicrobial peptide production. Patients with vitamin D >50 ng/mL recover from acne inflammation 30% faster.
4. Thyroid Dysfunction & Skin Barrier Breakdown
Hypothyroidism (TSH >4.0) causes dry, flaky, non-resilient skin due to reduced sebum and collagen production. Thyroid optimization restores skin elasticity and reduces inflammation. Most patients see visible barrier improvement within 6–10 weeks of levothyroxine therapy.
5. Gut-Skin Axis & Systemic Inflammation
Elevated hsCRP (>1.0 mg/L) reflects systemic inflammation that manifests in acne, rosacea, and premature aging. Anti-inflammatory diets (omega-3, polyphenols), probiotics, and stress management reduce hsCRP by 25–40% in 8 weeks, with visible skin improvement.
Summary

Five Takeaways: Test Before You Treat

1
80% of persistent acne is hormonal, not topical. Tretinoin, benzoyl peroxide, and antibiotics treat the surface. Once you stop, acne returns. Test hormones first.
2
Insulin resistance drives acne in 40% of PCOS cases. Fasting insulin >12 mIU/L signals metabolic dysfunction. Low-glycemic diet + inositol + exercise reduce acne by 50% in 8–12 weeks.
3
Vitamin D, iron, and zinc deficiencies impair skin repair. Most acne-prone people are deficient. Repletion accelerates healing by 30%. You can't build resilient skin on an empty tank.
4
Systemic inflammation (hsCRP) shows up as acne and premature aging. Anti-inflammatory diet, omega-3, and stress management lower inflammation in 6–8 weeks. Your skin will follow.
5
Most dermatologists never test hormones. You need to. Get a baseline of DHEA-S, free testosterone, fasting insulin, TSH, vitamin D, and inflammatory markers. Then build a protocol that addresses your root cause.

Why arq. for Skin

Dermatology
Prescribe tretinoin, antibiotics, topicals. Acne returns when you stop. No hormonal testing.
arq. approach
Test hormones and metabolic markers. Fix elevated androgens, insulin resistance, thyroid. Clear skin lasting.
How it works

The arq. protocol for Skin

Three steps. Your data. Your physician. Your protocol.

Blood test at home

100+ biomarkers drawn at your door in 10 minutes. NABL-accredited labs. Results in 5 days. No clinic visit, no waiting rooms — just data.

Physician consult + results

Your physician reviews hormonal, inflammatory, and nutritional markers. Root cause of your skin issues — identified at the biochemical level.

Your protocol, delivered

Hormonal treatment, anti-inflammatory supplementation, nutritional correction — targeted to your biochemistry. Delivered in 48h. Skin + bloodwork reviewed quarterly.

Member story
Cystic acne for 5 years. Tretinoin helped the surface but it kept coming back. arq. found elevated DHEA-S and insulin resistance. Acne gone in 4 months.
Questions

Frequently asked about Skin

What causes hormonal acne?
Hormonal acne results from elevated androgens (DHEA-S, free testosterone), insulin resistance, or thyroid imbalance. In women with PCOS, insulin resistance drives acne in 40%. Excess androgens trigger sebum overproduction and clogged pores. Topical treatments (tretinoin, benzoyl peroxide) address the symptom, not the cause. Acne returns once treatment stops. arq. measures DHEA-S, free testosterone, fasting insulin, TSH, and metabolic markers. Once the hormonal root is identified—elevated DHEA-S, insulin resistance, or thyroid dysfunction—acne clears within 12-16 weeks with dietary changes, supplements, and targeted medication. Treatment continues until hormones normalize.
Can blood tests detect acne root cause?
Yes. Most dermatologists diagnose acne visually, prescribe topical or systemic antibiotics, then watch it return. They don't run hormonal bloodwork. arq. tests: DHEA-S (adrenal androgens), free testosterone (bound + unbound), fasting insulin (insulin resistance), TSH (thyroid), vitamin D, and zinc (critical for skin). If DHEA-S is elevated, insulin is high, or thyroid is sluggish, these explain persistent acne. Standard dermatology misses this. Once identified, hormonal acne resolves with targeted treatment addressing the actual cause. Most patients see significant improvement within 8-12 weeks.
How is tretinoin prescribed in India?
Tretinoin (Retin-A) is available in India via prescription from dermatologists. It's highly effective for acne and anti-aging but only treats the surface—it doesn't address hormonal causes. Many dermatologists prescribe it without hormonal testing. Result: acne improves on tretinoin but returns when you stop. arq.'s approach: test hormones first. If acne is hormonal (80% of cases), treat the root. Tretinoin helps during the transition, but hormonal balance prevents recurrence. Most patients reduce or eliminate tretinoin once underlying hormones normalize. This prevents long-term dependence and builds lasting clear skin.
How does insulin resistance cause acne?
High fasting insulin (from processed foods, stress, PCOS) triggers the body to overproduce androgens, which increase sebum. Excess oil clogs pores; bacteria thrives. Women with PCOS experience this acutely—40% get acne from insulin resistance alone. arq. measures fasting insulin and HOMA-IR (insulin resistance index). If elevated, dietary changes (lower glycemic load), exercise, and sometimes inositol or metformin dramatically improve acne. Blood sugar stability reduces androgens naturally. Most patients see significant acne improvement within 8-12 weeks as insulin normalizes, without needing strong topicals or antibiotics.
What is PCOS acne and how is it treated?
PCOS (polycystic ovary syndrome) causes elevated androgens and insulin resistance, triggering severe cystic acne, especially along the jawline. Standard acne treatment (tretinoin, antibiotics) doesn't work because they don't address hormonal imbalance. arq. tests testosterone, DHEA-S, fasting insulin, FSH/LH ratio, and thyroid. PCOS acne responds to: dietary changes (low glycemic), inositol supplementation, spironolactone (anti-androgen), and treatment of underlying insulin resistance. Most PCOS patients see 70-80% acne improvement within 12-16 weeks. Continued hormonal management prevents recurrence. This is fundamentally different from topical-only approaches.
Is spironolactone available for acne in India?
Spironolactone is available in India under brands like Aldactone. It's a potassium-sparing diuretic that blocks androgens, reducing sebum production and acne. Dermatologists sometimes prescribe it, but only after hormonal testing. arq. tests androgen levels to determine if spironolactone is appropriate. Dosing is 50-100 mg daily; results take 8-12 weeks. Side effects are rare but include breast tenderness and irregular periods. It's effective for hormonal acne, especially in women with elevated testosterone or PCOS. Combined with dietary changes and supplements targeting insulin resistance, spironolactone provides lasting clear skin.
How important is zinc for skin health?
Zinc is critical for skin barrier function, immune response to acne bacteria, and hormonal regulation. Low zinc impairs wound healing and increases sebum production. Many acne-prone people are deficient—vegetarians especially, since plant zinc is poorly absorbed. arq. measures serum zinc. If low, supplementation (15-30 mg daily) combined with hormonal treatment accelerates acne clearance. Zinc also modulates testosterone sensitivity at the skin level. Adequate zinc (with hormone balance) produces clear, resilient skin. Most patients notice stronger skin and faster healing within 4-6 weeks of zinc repletion.
How does arq. treat acne?
arq.'s acne protocol: (1) Physician consult to detail acne pattern—location, severity, hormonal cycle impact. (2) Home blood draw testing 100+ biomarkers, including DHEA-S, free testosterone, fasting insulin, TSH, vitamin D, and zinc. (3) Results within 5 days; your physician identifies the root: elevated androgens, insulin resistance, thyroid dysfunction, or nutrient deficiency. (4) Personalized protocol combining dietary changes, supplements, topical treatments, and medication (spironolactone, tretinoin if needed). arq. doesn't treat acne generically—treatment targets your specific hormonal profile. Most patients see 70-80% improvement within 12-16 weeks; clear skin within 16 weeks.
Start with the bloodwork

Real Indian doctors. Delivered to your home.

No AI chat. No templates. No copy-paste PDFs. A specialist reads your panel against South Asian-calibrated ranges and writes the protocol on a 15–20 minute video consult — inside 7 days of your home draw.

NABL-accredited labs
CDSCO-compliant Rx
DPDP-compliant data
South Asian-calibrated ranges
Early access

Join the waitlist

Be among the first to experience physician-led, data-driven health — delivered to your door across India.