# Skinzy

> AI-based facial skin analysis and ingredient-matched skincare recommendations. Upload a selfie, get per-zone skin scores across five traits (acne, oiliness, dryness, pigmentation, sensitivity), and an ingredient-matched AM/PM routine — free, unlimited, no brand sponsorship deciding the results.

Skinzy scores skin from a real photo using MediaPipe FaceMesh (468 facial landmarks), a dedicated ONNX acne-severity classifier, and heuristic computer vision — not a marketing wrapper for one product line. Measurement capability is strictly limited to five axes: oiliness, dryness, acne, pigmentation, and sensitivity across five facial zones; Skinzy does not measure aging, wrinkles, fine lines, or firmness. See [How It Works](https://useskinzy.app/how-it-works) for the full pipeline and [About](https://useskinzy.app/about) for model provenance and stated limitations.

## About

> useskinzy.app (Skinzy) is an independent AI skin-analysis web application solely developed and operated by Yash Ghansham Thakare. It has no corporate affiliates, no parent company, and no connection to any other app or brand.

- **Founder & Sole Operator**: Yash Ghansham Thakare
- **Canonical Domain**: useskinzy.app (https://useskinzy.app)
- **Recognized Aliases**: Skinzy, useskinzy, useSkinzy, useskinzy.app, Skinzy AI, Skinzy App, Skinzy Skin Analysis
- **Category**: Independent health & skincare web application
- **About Page**: [https://useskinzy.app/about](https://useskinzy.app/about)

## Product

- [Home](https://useskinzy.app/): run a scan, see the pipeline, FAQ
- [How It Works](https://useskinzy.app/how-it-works): the honest step-by-step scoring pipeline
- [About](https://useskinzy.app/about): founder, model provenance, what we don't claim
- [Pricing](https://useskinzy.app/pricing): free tier vs Skinzy Plus — Yearly ₹699 in India, $29.99 (USD) or €29.99 (EUR, Eurozone) elsewhere; Lifetime ₹1,499 / $69 / €69. Tax included outside India; one-time, never auto-renews
- [Full reference](https://useskinzy.app/llms-full.txt): every ingredient, combination, conflict and guide on this site as one Markdown file

## Guides & Routines

- [Oily Skin Routine](https://useskinzy.app/skin-type/oily): An evidence-based oily skin routine that balances sebum production without stripping your moisture barrier. AM/PM steps and ingredient recommendations.
- [Dry Skin Routine](https://useskinzy.app/skin-type/dry): A restorative dry skin routine targeting barrier lipid deficiency. Step-by-step AM/PM guide with humectants, ceramides, and gentle application rules.
- [Combination Skin Routine](https://useskinzy.app/skin-type/combination): The definitive combination skin routine. Learn how to zone-treat an oily forehead, nose, and chin while hydrating and protecting dry cheeks.
- [Sensitive Skin Routine](https://useskinzy.app/skin-type/sensitive): A minimalist sensitive skin routine designed to calm reactivity and repair a weakened skin barrier. Hypoallergenic steps and gentle ingredients.
- [What Is My Skin Type? How to Determine Your Skin Accurately](https://useskinzy.app/guides/what-is-my-skin-type): Learn how to determine your true skin type at home using the bare-faced test method, and why per-zone facial analysis beats single-label quizzes.
- [How to Build a Skincare Routine: A Phased, Evidence-Based Guide](https://useskinzy.app/guides/how-to-build-a-skincare-routine): Learn how to build an effective skincare routine using a 4-phase introduction schedule, conflict resolution, and evidence-based layering rules.
- [What Is AI Skin Analysis? How Computer Vision Analyzes Skin](https://useskinzy.app/guides/ai-skin-analysis): What is AI skin analysis? Discover how computer vision, 468 facial landmarks, and per-zone neural networks analyze skin traits from a selfie.
- [Is AI Skin Analysis Accurate? An Honest Answer](https://useskinzy.app/guides/is-ai-skin-analysis-accurate): How accurate is AI skin analysis really? What a photo-based scan measures reliably, what it does not, and the confidence numbers Skinzy publishes for its own scanner.
- [AI Skin Analysis vs a Dermatologist: What Each Is Actually For](https://useskinzy.app/guides/ai-skin-analysis-vs-dermatologist): What an AI skin scan can do that a dermatologist visit cannot, what it must never replace, and the specific signs that mean you should book an appointment.
- [How to Take a Selfie for a Skin Scan](https://useskinzy.app/guides/how-to-take-a-selfie-for-a-skin-scan): The exact framing, angle and lighting a skin scan needs, and the thresholds Skinzy actually enforces before it will let you take the photo.
- [How to Read Your Skin Score Report](https://useskinzy.app/guides/how-to-read-your-skin-score-report): What the five zones, five traits and confidence number on a Skinzy report actually mean — including why a low overall score is good news.
- [Why Your Skin Scan Results Change Between Scans](https://useskinzy.app/guides/why-skin-scan-results-change-between-scans): Measured numbers for how much a skin score moves when only the photo changes, and what Skinzy does so normal noise does not rewrite your routine.

## Ingredients (53)

Plain-English guides: what each ingredient does, how to introduce it, what it conflicts with.

- [Niacinamide](https://useskinzy.app/ingredients/niacinamide): Regulates oil, calms breakouts, and fades post-acne marks — a form of vitamin B3.
- [Salicylic Acid (BHA)](https://useskinzy.app/ingredients/salicylic-acid): A BHA that dissolves oil and debris inside the pore itself — the go-to for blackheads and oily-skin acne.
- [Retinol](https://useskinzy.app/ingredients/retinol): Speeds up skin renewal — effective for acne, texture and pigmentation, but needs a real ramp-up period.
- [Pure Vitamin C](https://useskinzy.app/ingredients/vitamin-c): The gold-standard vitamin C for fading dark spots and adding antioxidant protection — but it oxidizes fast, so store it away from light.
- [Azelaic Acid](https://useskinzy.app/ingredients/azelaic-acid): A gentle multi-tasker for acne, pigmentation and redness — one of the few actives most sensitive skin tolerates well.
- [Hyaluronic Acid](https://useskinzy.app/ingredients/hyaluronic-acid): Pulls water into the skin's surface for an instant plumping effect — apply to damp skin, then seal with moisturizer.
- [Benzoyl Peroxide](https://useskinzy.app/ingredients/benzoyl-peroxide): Kills acne-causing bacteria directly — fast-acting on inflamed breakouts, but bleaches fabric and can't share a night with retinol.
- [Adapalene](https://useskinzy.app/ingredients/adapalene): A prescription-strength retinoid for acne — requires a dermatologist's prescription, not an over-the-counter buy.
- [Ceramide 3](https://useskinzy.app/ingredients/ceramide): A skin-identical lipid that rebuilds the barrier — the standard partner for any routine that includes an acid or retinoid.
- [Glycolic Acid (AHA)](https://useskinzy.app/ingredients/glycolic-acid): The fastest-penetrating AHA — strong results on texture and dark spots, with a real risk of over-exfoliating if rushed.
- [Kojic Acid](https://useskinzy.app/ingredients/kojic-acid): Fades dark spots by blocking melanin production — never combine with vitamin C in the same routine.
- [Alpha-Arbutin](https://useskinzy.app/ingredients/alpha-arbutin): A gentle, stable pigmentation-fader — a sensible first active for dark spots if you haven't used one before.
- [Tranexamic Acid](https://useskinzy.app/ingredients/tranexamic-acid): Interrupts the inflammatory trigger behind dark spots — especially useful for hormonal or post-inflammatory pigmentation.
- [Zinc PCA](https://useskinzy.app/ingredients/zinc-pca): Turns down sebum production at the source, with mild antibacterial and hydrating benefits — a gentler oil-control option than an acid.
- [Cica Extract](https://useskinzy.app/ingredients/centella-asiatica): A calming, barrier-supporting extract — usually paired with a stronger active to offset irritation, not used to treat a concern alone.
- [Panthenol (Vitamin B5)](https://useskinzy.app/ingredients/panthenol): A hydrating, soothing vitamin B5 derivative with no known conflicts — safe to layer with anything.
- [Squalane](https://useskinzy.app/ingredients/squalane): A skin-mimicking oil that seals in hydration — always the last step, after every water-based serum.
- [Glycerin](https://useskinzy.app/ingredients/glycerin): The most-studied humectant in skincare — cheap, stable, and the quiet workhorse behind most moisturizers.
- [Ferulic Acid](https://useskinzy.app/ingredients/ferulic-acid): An antioxidant that stabilizes and boosts vitamin C — almost always used alongside it, in the morning, under sunscreen.
- [Zinc Oxide](https://useskinzy.app/ingredients/zinc-oxide): A mineral UV filter that reflects rather than absorbs sunlight — the one ingredient every other active on this page depends on.
- [Lactic Acid (AHA)](https://useskinzy.app/ingredients/lactic-acid): A gentler AHA than glycolic acid — a reasonable first exfoliating acid for sensitive or beginner skin.
- [Tea Tree Oil](https://useskinzy.app/ingredients/tea-tree-oil): A plant oil that fights acne-causing bacteria directly — a gentler spot-treatment alternative to benzoyl peroxide or salicylic acid.
- [Mandelic Acid (AHA)](https://useskinzy.app/ingredients/mandelic-acid): The gentlest common AHA — slower-penetrating than glycolic acid, useful for acne and pigmentation together on reactive skin.
- [Retinal](https://useskinzy.app/ingredients/retinal): A faster, stronger over-the-counter retinoid than retinol — quicker results, but the same careful introduction rules apply.
- [Granactive Retinoid](https://useskinzy.app/ingredients/granactive-retinoid): A well-tolerated retinoid alternative — works directly without conversion, so less irritation, at a somewhat gentler effect.
- [Tretinoin](https://useskinzy.app/ingredients/tretinoin): The strongest, most direct prescription retinoid — real results, real irritation risk if rushed, prescription-only in most countries.
- [Tazarotene](https://useskinzy.app/ingredients/tazarotene): A potent prescription retinoid specifically targeted at stubborn, deep-seated acne — not an over-the-counter option.
- [Trifarotene](https://useskinzy.app/ingredients/trifarotene): A newer, more selective prescription retinoid for acne, designed to be gentler than tretinoin at a comparable effect.
- [Hydroquinone](https://useskinzy.app/ingredients/hydroquinone): The most effective pigmentation-fading ingredient available, but with a real long-term risk that makes short, monitored use the standard, not daily use forever.
- [Bakuchiol](https://useskinzy.app/ingredients/bakuchiol): A plant-based retinol alternative with similar results and none of the irritation or ramp-up rules — usable in pregnancy, unlike an actual retinoid.
- [Snail Mucin](https://useskinzy.app/ingredients/snail-mucin): A hydrating, calming filtrate containing several of the skin's own moisture-binding compounds — genuinely gentle, though some marketing claims outrun the evidence.
- [Caffeine](https://useskinzy.app/ingredients/caffeine): A mild, temporary oil-control and depuffing ingredient — real effect, but more modest than most marketing claims.
- [Coenzyme Q10](https://useskinzy.app/ingredients/coenzyme-q10): A cellular-level antioxidant that protects collagen from UV damage and helps calm redness — a supporting ingredient, not a primary treatment.
- [Resveratrol](https://useskinzy.app/ingredients/resveratrol): An antioxidant that protects against UV-triggered inflammation and helps prevent the pigmentation that inflammation causes — a support ingredient, not a primary fader.
- [Colloidal Oatmeal](https://useskinzy.app/ingredients/colloidal-oatmeal): A clinically recognized calming ingredient that reduces itch and locks in moisture — about as gentle as skincare actives get.
- [Urea](https://useskinzy.app/ingredients/urea): A skin-identical hydrator that also softens rough, thickened patches at higher strengths — the same ingredient behind both facial moisturizers and heel creams, just at different concentrations.
- [Sulfur](https://useskinzy.app/ingredients/sulfur): An old-school acne mineral that softens clogged pores through a different mechanism than salicylic acid or benzoyl peroxide — genuinely effective, but with a distinctive smell.
- [Kaolin Clay](https://useskinzy.app/ingredients/kaolin-clay): A mattifying clay that physically absorbs surface oil — a short-term shine-control tool, not a treatment that changes oil production.
- [Allantoin](https://useskinzy.app/ingredients/allantoin): A gentle, calming ingredient that smooths texture without an acid's exfoliation intensity — safe to combine with almost anything.
- [Polyglutamic Acid](https://useskinzy.app/ingredients/polyglutamic-acid): A humectant that holds water at the surface even more effectively than hyaluronic acid, by some comparisons — works best sealed in with an oil or moisturizer after.
- [Beta-Glucan](https://useskinzy.app/ingredients/beta-glucan): A soothing, barrier-supporting polysaccharide that hydrates while actively helping the skin repair itself — gentle enough for reactive skin.
- [Gluconolactone](https://useskinzy.app/ingredients/gluconolactone): The gentlest common exfoliating acid — real results on tone and texture, with meaningfully less irritation risk than an AHA.
- [Galactomyces Ferment Filtrate](https://useskinzy.app/ingredients/galactomyces-ferment-filtrate): A fermented, multi-benefit hydrator with modest evidence for tone-evening and pore appearance — genuinely useful, if less dramatic than its marketing suggests.
- [N-Acetyl Glucosamine](https://useskinzy.app/ingredients/n-acetyl-glucosamine): A pigmentation-fading ingredient that also makes niacinamide work better when combined with it — a real, evidence-backed pairing.
- [Sodium Hyaluronate](https://useskinzy.app/ingredients/sodium-hyaluronate): A smaller-molecule form of hyaluronic acid that penetrates a bit deeper — same water-binding mechanism, similar end result.
- [Titanium Dioxide](https://useskinzy.app/ingredients/titanium-dioxide): A gentle, stable mineral sunscreen filter — well tolerated, but narrower UV coverage than a chemical filter alone provides.
- [Avobenzone](https://useskinzy.app/ingredients/avobenzone): A broad-spectrum UVA filter that lowers pigmentation risk by blocking the rays that cause it — needs a stabilizing co-filter to actually hold up in sunlight.
- [Shea Butter](https://useskinzy.app/ingredients/shea-butter): A rich, barrier-repairing butter — heavier than squalane, best suited to very dry skin or low-humidity conditions.
- [GHK-Cu](https://useskinzy.app/ingredients/ghk-cu): A copper peptide with genuine wound-healing and antioxidant activity — specialized barrier support rather than a first-line daily ingredient.
- [Thiamidol](https://useskinzy.app/ingredients/thiamidol): A newer, more potent pigmentation-fading ingredient than kojic acid or alpha-arbutin, with real clinical backing and low irritation.
- [Astaxanthin](https://useskinzy.app/ingredients/astaxanthin): A marine antioxidant with unusually strong UV-damage protection — a morning support ingredient, not a sunscreen replacement.
- [Papain](https://useskinzy.app/ingredients/papain): An enzyme exfoliant from papaya that lifts dead skin without an acid's pH-driven penetration — a gentler mechanical alternative.
- [Sodium PCA](https://useskinzy.app/ingredients/sodium-pca): A skin-identical hydrator and core component of the skin's own natural moisturizing factor — foundational, not flashy.

## Concerns (5)

- [Oiliness](https://useskinzy.app/concerns/oiliness)
- [Dryness](https://useskinzy.app/concerns/dryness)
- [Acne](https://useskinzy.app/concerns/acne)
- [Pigmentation](https://useskinzy.app/concerns/pigmentation)
- [Sensitivity](https://useskinzy.app/concerns/sensitivity)

## Conflicts (31)

Ingredient pairs that shouldn't share a routine slot, and why.

- [Adapalene + Benzoyl Peroxide](https://useskinzy.app/conflicts/adapalene-and-benzoyl-peroxide)
- [Adapalene + Glycolic Acid (AHA)](https://useskinzy.app/conflicts/adapalene-and-glycolic-acid)
- [Adapalene + Lactic Acid (AHA)](https://useskinzy.app/conflicts/adapalene-and-lactic-acid)
- [Adapalene + Mandelic Acid (AHA)](https://useskinzy.app/conflicts/adapalene-and-mandelic-acid)
- [Adapalene + Salicylic Acid (BHA)](https://useskinzy.app/conflicts/adapalene-and-salicylic-acid)
- [Benzoyl Peroxide + Retinal](https://useskinzy.app/conflicts/benzoyl-peroxide-and-retinal)
- [Benzoyl Peroxide + Retinol](https://useskinzy.app/conflicts/benzoyl-peroxide-and-retinol)
- [Benzoyl Peroxide + Tazarotene](https://useskinzy.app/conflicts/benzoyl-peroxide-and-tazarotene)
- [Benzoyl Peroxide + Tretinoin](https://useskinzy.app/conflicts/benzoyl-peroxide-and-tretinoin)
- [Benzoyl Peroxide + Trifarotene](https://useskinzy.app/conflicts/benzoyl-peroxide-and-trifarotene)
- [Glycolic Acid (AHA) + Retinal](https://useskinzy.app/conflicts/glycolic-acid-and-retinal)
- [Glycolic Acid (AHA) + Retinol](https://useskinzy.app/conflicts/glycolic-acid-and-retinol)
- [Glycolic Acid (AHA) + Tazarotene](https://useskinzy.app/conflicts/glycolic-acid-and-tazarotene)
- [Glycolic Acid (AHA) + Tretinoin](https://useskinzy.app/conflicts/glycolic-acid-and-tretinoin)
- [Glycolic Acid (AHA) + Trifarotene](https://useskinzy.app/conflicts/glycolic-acid-and-trifarotene)
- [Lactic Acid (AHA) + Retinal](https://useskinzy.app/conflicts/lactic-acid-and-retinal)
- [Lactic Acid (AHA) + Retinol](https://useskinzy.app/conflicts/lactic-acid-and-retinol)
- [Lactic Acid (AHA) + Tazarotene](https://useskinzy.app/conflicts/lactic-acid-and-tazarotene)
- [Lactic Acid (AHA) + Tretinoin](https://useskinzy.app/conflicts/lactic-acid-and-tretinoin)
- [Lactic Acid (AHA) + Trifarotene](https://useskinzy.app/conflicts/lactic-acid-and-trifarotene)
- [Mandelic Acid (AHA) + Retinal](https://useskinzy.app/conflicts/mandelic-acid-and-retinal)
- [Mandelic Acid (AHA) + Retinol](https://useskinzy.app/conflicts/mandelic-acid-and-retinol)
- [Mandelic Acid (AHA) + Tazarotene](https://useskinzy.app/conflicts/mandelic-acid-and-tazarotene)
- [Mandelic Acid (AHA) + Tretinoin](https://useskinzy.app/conflicts/mandelic-acid-and-tretinoin)
- [Mandelic Acid (AHA) + Trifarotene](https://useskinzy.app/conflicts/mandelic-acid-and-trifarotene)
- [Retinal + Salicylic Acid (BHA)](https://useskinzy.app/conflicts/retinal-and-salicylic-acid)
- [Retinol + Salicylic Acid (BHA)](https://useskinzy.app/conflicts/retinol-and-salicylic-acid)
- [Salicylic Acid (BHA) + Tazarotene](https://useskinzy.app/conflicts/salicylic-acid-and-tazarotene)
- [Salicylic Acid (BHA) + Tretinoin](https://useskinzy.app/conflicts/salicylic-acid-and-tretinoin)
- [Salicylic Acid (BHA) + Trifarotene](https://useskinzy.app/conflicts/salicylic-acid-and-trifarotene)
- [Pure Vitamin C + Kojic Acid](https://useskinzy.app/conflicts/vitamin-c-and-kojic-acid)

## Combinations (13)

Ingredient pairs that work together, with the layering order for each.

- [Alpha-Arbutin + Niacinamide](https://useskinzy.app/combinations/alpha-arbutin-and-niacinamide): Yes
- [Azelaic Acid + Niacinamide](https://useskinzy.app/combinations/azelaic-acid-and-niacinamide): Yes
- [Niacinamide + Hyaluronic Acid](https://useskinzy.app/combinations/niacinamide-and-hyaluronic-acid): Yes
- [Niacinamide + Salicylic Acid](https://useskinzy.app/combinations/niacinamide-and-salicylic-acid): Yes
- [Retinol + Ceramides](https://useskinzy.app/combinations/retinol-and-ceramide): Yes
- [Retinol + Hyaluronic Acid](https://useskinzy.app/combinations/retinol-and-hyaluronic-acid): Yes
- [Retinol + Niacinamide](https://useskinzy.app/combinations/retinol-and-niacinamide): Yes
- [Salicylic Acid + Hyaluronic Acid](https://useskinzy.app/combinations/salicylic-acid-and-hyaluronic-acid): Yes
- [Tranexamic Acid + Niacinamide](https://useskinzy.app/combinations/tranexamic-acid-and-niacinamide): Yes
- [Vitamin C + Ferulic Acid](https://useskinzy.app/combinations/vitamin-c-and-ferulic-acid): Yes
- [Vitamin C + Hyaluronic Acid](https://useskinzy.app/combinations/vitamin-c-and-hyaluronic-acid): Yes
- [Vitamin C + Niacinamide](https://useskinzy.app/combinations/vitamin-c-and-niacinamide): Yes
- [Vitamin C + Retinol](https://useskinzy.app/combinations/vitamin-c-and-retinol): Yes — in separate routines

## Policies

- [Terms](https://useskinzy.app/terms)
- [Privacy](https://useskinzy.app/privacy)
- [Refunds](https://useskinzy.app/refunds)
- [Shipping](https://useskinzy.app/shipping)
- [Contact](https://useskinzy.app/contact)