Skip to the content

50% off everything + use code BLACKFRIDAY for a free test kit on orders $120+

Idunn’s Applelogo darklogo light
  • Shop
  • Science
  • About
My Account

0

Idunn’s Apple
  • Shop
  • Science
  • About
Measure Your Skin Age
My Account

0

Idunn’s Apple

0

  • Shop
  • Science
  • About
Sale New
Skin Aging Self-Test Kit
Skin Aging Self-Test Kit - Image 2
Skin Aging Self-Test Kit - Image 3

Skin Aging Self-Test Kit

(5 customer reviews)

Suitable For: Ages 30-65+, all skin types

Key Benefit: Immediately reveal your true skin’s biological age and aging velocity through real biomarker analysis, enabling personalized and dynamically optimized skin longevity treatment choices through Idunn’s Apple’s biological age-segmented product lines, all at home.


Features
  • Measures true skin age and aging velocity
  • Simple 5-minute self-test with lab-proven accuracy
  • Examines bioactive skin aging factors from non-invasive skin sample
  • Immediate results via web app (no download necessary)
  • Detailed analysis report with actionable recommendations
  • Indicates biological age-linked skin hydration, elasticity, and antioxidant capacity
  • Highly correlated with epigenetic DNAm Age assays
  • Designed for continuous monitoring and progress tracking

How to Use
  • Insert unused adhesive disc into a tube and set as control.
  • Collect sample from cheekbone using another disc.
  • Insert into a separate tube and set as sample.
  • Add 10 drops of buffer to both control and sample tubes.
  • Follow the web app to scan with smartphone camera for immediate results.

Standard Purchase
$39.00 $19.50

50% OFF + Use code BLACKFRIDAY for a free Skin Aging Self-Test Kit for orders $120+

Clear
- +
1 person currently viewing this item
SKU: TST001 Category:Tests
  • Description
  • Additional information
  • Reviews (5)

Description

Test in the Comfort of Your Home

1.

Collect.

Adhere a non-invasive adhesive to your skin.

2.

Mix.

Add a few drops of reaction liquid.

3.

Scan.

Take a photo with our web app for immediate results.

Go beyond your birth age

Discover Your Skin's Real Age

Instantly measure your skin’s true biological age and aging velocity using real molecular biomarkers — revealing what your skin’s appearance can’t tell you.

No Lab Needed, Hassle-Free

Results in 5 Minutes

Our rapid self-test uses a non-invasive sample to analyze bioactive aging factors with lab-level accuracy, outperforming traditional epigenetic age assays.

Truly Actionable Results

An Instant Report to Upgrade Your Regimen

Your analysis reveals your skin’s biological age profile, then recommends the most effective products and regimen. Your instant report will include:

  • Your biological skin age
  • Your aging velocity versus birth age
  • How you compare to your age group
  • How you compare to total population
  • Hydration, antioxidation, and elasticity benchmarks
  • Specific regimen suggestions
  • Exact product recommendations

No tedious questionnaire. No download necessary. Just your mobile browser.

Go to Web App
Step1b
Step2b
Step3b
Step4b
From bio signals to measurable age

How It Works

The adhesive included in the kit collects biomolecules produced by your skin cells. The test then reads their biomarkers that control and regulate your skin's aging, then calculates a Skin Epigenetic Hydroxylation Incompetence (SEHI) score showing how your skin is aging. A higher score means faster aging and vice versa—so you can understand, track, and improve your skin’s health over time.

What is SEHI?
Hear It From Your peers

What Others Are Saying

See More Reviews
Naomi S.
Cool Way to Understand Your Skin Better
☆ ☆ ☆ ☆ ☆

This is one of the most unique products I’ve ever tried. I loved how it gave me a snapshot of my skin’s true health, not just how it looks in the mirror. It’s simple, informative, and fun to use. I’d recommend it to anyone who cares about aging well.

6 Month Ago
Leah T.
Feels Like Having a Mini Lab at Home
☆ ☆ ☆ ☆ ☆

This kit gave me such a clear view of how my skin is aging. I learned that my skin is aging a bit faster than average, which helped me make changes in my routine. The report that came with the results gave me tips that actually felt personalized, not generic advice.

Hannah R.
Simple Test with Clear and Useful Results
☆ ☆ ☆ ☆ ☆

Everything about this test was simple and clear. I liked that I could see my results instantly in the app. It also showed my aging speed, which was interesting. I’ve started adjusting my skincare based on that and already notice a difference in how my skin feels.

Carmen D.
So Easy and Surprisingly Accurate
☆ ☆ ☆ ☆ ☆

I didn’t expect the test to be this simple. The instructions were clear and I got my results in minutes. It told me my skin was a little older than my age, which motivated me to drink more water and use my serum consistently. I retested two month later and saw improvement, so I’m convinced it works.

Frequently Asked Questions

What is biological skin age?

Your biological skin age reflects the true condition of your skin cells, collagen, hydration, and repair capacity—not just the number of candles on your cake. While your chronological age moves at a steady pace, your biological skin age can speed up or slow down depending on epigenetics, lifestyle, and skincare choices. Understanding this age—and whether you’re experiencing accelerated skin aging—is the key to building skincare that truly works for you.

What is the major advantage of using the rapid Skin Aging Self-Test?

The rapid Skin Aging Self-Test uses noninvasive sampling and smart molecular analysis to evaluate your skin’s epigenetic health—essentially reading your Skin Epigenetic Hydroxylation Incompetence (SEHI) score, which reflects how your skin is aging at the biological level. No special equipment is needed. This affordable test can be performed by yourself in the comfort of your own home, and allows you to discover your true biological skin age in just 5 minutes. It helps you select the best-suited, age-segmented skincare products. The Skin Age Self-Test is comparable to—or even superior to—the gold-standard DNAm Age assay (an epigenetic assay with potential clinical applications), as it is built on functional demethylation downstream effectors, not static methylation markers.

What is the scientific basis of the test?

The rapid Skin Aging Self-Test measures your skin’s epigenetic health through noninvasive sampling and molecular analysis of the SEHI (Skin Epigenetic Hydroxylation Incompetence) score. SEHI reflects your skin’s declining ability to maintain proper DNA hydroxylation and epigenetic balance.

In simpler terms, it measures how efficiently your skin cells can “reset” themselves after exposure to stressors such as UV light, pollution, or lifestyle habits. When this function weakens, your biological skin age begins to accelerate—resulting in visible signs of aging like dryness, loss of elasticity, uneven tone, and wrinkles beyond your actual years.

What information will I learn from this test?

After testing, you will receive the following insights:

 

  • Your Skin Age or Biological Age Segment – how biologically old your skin behaves
  • Your Accelerated Aging Level – how fast your skin is aging compared to healthy norms
  • Your Aging-Associated Skin Quality – how well your skin maintains hydration, elasticity, and antioxidation

These results help you understand whether your skin is aging at a healthy pace or in a “fast-aging” mode that needs urgent correction.

Why should I regularly check my skin age status?

Regularly checking your skin age reveals how fast your skin is truly aging—beyond what you can see in the mirror. It helps you detect early changes, adjust skincare effectively, and track real improvements. With SEHI-based skin age testing, you can manage—not guess—your biological aging and care for your skin in the most suitable way to help keep it youthful longer.

Why is this test the best tool to help reset your skin to a healthy aging pace?

In the world of skincare, one-size-fits-all solutions no longer make sense. Your skin’s needs are unique—not only because of your chronological age, but also because your biological skin age and accelerated aging level evolve over time. The SEHI-based skin aging self-test is revolutionizing how we understand, track, and care for our skin—helping you move beyond guesswork into true personalization. Knowing your SEHI-based skin age transforms how you choose skincare. Instead of relying on marketing claims or generic “anti-aging” labels, you can select products precisely targeted to your biological needs. If your SEHI score shows early-stage imbalance, you may only need antioxidant or barrier-strengthening care. If your score indicates deep hydroxylation dysfunction, GTA (Golden Triple Actives) age-segmented skincare products from Idunn’s Apple—which reactivate epigenetic hydroxylation—can help reset your skin to a healthy aging pace.

Already Know Your Skin Age?

Shop by Your Skin Age

Silent Signs Stage (minor SEHI). Goals: slow visible aging through antioxidant protection, balance hydration, and maintain skin smoothness and elasticity.

Ideal for Under 45, 45-64, 65+
Rejuvenating Cleanser
$33.00 Original price was: $33.00.$16.50Current price is: $16.50.
View Product
Ideal for Under 45
Age-Defying Serum
$79.00 Original price was: $79.00.$39.50Current price is: $39.50.
View Product
Ideal for Under 45, 45-54
Age-Defying Day Lotion
$69.00 Original price was: $69.00.$34.50Current price is: $34.50.
View Product
Ideal for Under 45, 45-49
Age-Defying Night Cream
$59.00 Original price was: $59.00.$29.50Current price is: $29.50.
View Product
Ideal for Under 45
Longevity System I – Early Intervention (Under 45)
$240.00 Original price was: $240.00.$120.00Current price is: $120.00.
View Product

Initial Signs Stage (gradually increased SEHI). Goals: preserve firmness by enhancing antioxidant defense and maintaining moisture retention.

Ideal for Under 45, 45-64, 65+
Rejuvenating Cleanser
$33.00 Original price was: $33.00.$16.50Current price is: $16.50.
View Product
Ideal for 45-54
Even-Tone Antioxidant Serum
$69.00 Original price was: $69.00.$34.50Current price is: $34.50.
View Product
Ideal for Under 45, 45-54
Age-Defying Day Lotion
$69.00 Original price was: $69.00.$34.50Current price is: $34.50.
View Product
Ideal for Under 45, 45-49
Age-Defying Night Cream
$59.00 Original price was: $59.00.$29.50Current price is: $29.50.
View Product
Ideal for 45-49
Longevity System II – Firmness Reinforcement (45-49)
$230.00 Original price was: $230.00.$115.00Current price is: $115.00.
View Product

Active Aging Stage (moderately expressed SEHI). Goals: improve elasticity by intensifying antioxidant defense, increase cell repair, and sustain hydration.

Ideal for Under 45, 45-64, 65+
Rejuvenating Cleanser
$33.00 Original price was: $33.00.$16.50Current price is: $16.50.
View Product
Ideal for 45-54
Even-Tone Antioxidant Serum
$69.00 Original price was: $69.00.$34.50Current price is: $34.50.
View Product
Ideal for Under 45, 45-54
Age-Defying Day Lotion
$69.00 Original price was: $69.00.$34.50Current price is: $34.50.
View Product
Ideal for 50-59
Radiant Cell Repair Cream
$79.00 Original price was: $79.00.$39.50Current price is: $39.50.
View Product
Ideal for 50-54
Longevity System III – Active Repair (50-54)
$250.00 Original price was: $250.00.$125.00Current price is: $125.00.
View Product

Visible Structure-Loss Stage (highly expressed SEHI). Goals: rebuild dermal density and resilience by boosting hydration and cell repair while maintaining antioxidant defense.

Ideal for Under 45, 45-64, 65+
Rejuvenating Cleanser
$33.00 Original price was: $33.00.$16.50Current price is: $16.50.
View Product
Ideal for 55-64
Dermal Quench Hydration Serum
$65.00 Original price was: $65.00.$32.50Current price is: $32.50.
View Product
Ideal for 55-64, 65+
Even-Tone Antioxidant Lotion
$59.00 Original price was: $59.00.$29.50Current price is: $29.50.
View Product
Ideal for 50-59
Radiant Cell Repair Cream
$79.00 Original price was: $79.00.$39.50Current price is: $39.50.
View Product
Ideal for 55-59
Longevity System IV – Deep Rebuild (55-59)
$236.00 Original price was: $236.00.$118.00Current price is: $118.00.
View Product

Functional Aging Stage (severe SEHI). Goals: reactivate cellular renewal, enhance microcirculation, restore vitality and tone through deep hydration, anti-wrinkle care, and antioxidant protection.

Ideal for Under 45, 45-64, 65+
Rejuvenating Cleanser
$33.00 Original price was: $33.00.$16.50Current price is: $16.50.
View Product
Ideal for 55-64
Dermal Quench Hydration Serum
$65.00 Original price was: $65.00.$32.50Current price is: $32.50.
View Product
Ideal for 55-64, 65+
Even-Tone Antioxidant Lotion
$59.00 Original price was: $59.00.$29.50Current price is: $29.50.
View Product
Ideal for 60-64, 65+
Hydro Lift Anti-Wrinkle Cream
$89.00 Original price was: $89.00.$44.50Current price is: $44.50.
View Product
Ideal for 60-64
Longevity System V – Advanced Renewal (60-64)
$256.00 Original price was: $256.00.$128.00Current price is: $128.00.
View Product

Significant Signs Stage (critical SEHI). Goals: support structure preservation and prevent further decline via intensive cell repair, anti-wrinkle action, deep hydration, and antioxidant/dark spot defense.

Ideal for Under 45, 45-64, 65+
Rejuvenating Cleanser
$33.00 Original price was: $33.00.$16.50Current price is: $16.50.
View Product
Ideal for 65+
Eternal Boost Anti-Wrinkle Serum
$72.00 Original price was: $72.00.$36.00Current price is: $36.00.
View Product
Ideal for 55-64, 65+
Even-Tone Antioxidant Lotion
$59.00 Original price was: $59.00.$29.50Current price is: $29.50.
View Product
Ideal for 60-64, 65+
Hydro Lift Anti-Wrinkle Cream
$89.00 Original price was: $89.00.$44.50Current price is: $44.50.
View Product
Inside the Lab

Insights From Our Scientists

Browse Articles
Press Releases
World’s First 5-Minute At-Home Biological Skin Age Test Launches, Paired with Precision Longevity Skincare
Press Releases
A Skincare Revolution: Golden Triple Actives (GTA) Formulation Targets the Hidden Root Cause of Skin Aging
AgingPersonalization
The Best Skin Longevity Care for 65+: Restoring Comfort and Strength with SEHI and BioAge-Fractioned Care
AgingSkin Epigenetics
SEHI-Targeted Elasticity Boost: How to Bring Back Your Skin’s Natural Bounce from Within
AgingPersonalization
Why Age-Fractioned Longevity Skincare Could Be Your Most Powerful Beauty Upgrade
AgingPersonalization
The Best Skin Longevity Care for Ages 55–64: Restoring Balance with SEHI and BioAge-Fractioned Care
FormulationIdunn's Products
Why GTA Formulated Skincare Is the Best Way to Reset Accelerated Skin Aging
AgingPersonalization
The Best Skin Longevity Care for Ages 45–54: Resetting with SEHI and BioAge-Fractioned Care
LongevityPersonalization
Knowing Your Biological Skin Age: Turning the Secret to Smarter Skincare

Citations: 

  1. Sin SH et al: Skin aging from mechanisms to interventions: focusing on dermal aging. Front Physiol, 2023.
  2. Shen X et al: Nonlinear dynamics of multi-omics profiles during human aging. Nature Aging, 2024.
  3. Ding Y et al: Comprehensive human proteome profiles across a 50-year lifespan reveal aging trajectories and signatures. Cell, 2025.
  4. Horvath S et al: Epigenetic clock for skin and blood cells applied to Hutchinson Gilford Progeria Syndrome and ex vivo studies. 2018.
  5. Boroni M et al: Highly accurate skin-specific methylome analysis algorithm as a platform to screen and validate therapeutics for healthy aging. Clin Epigenetics, 2020.

Related

Additional information

Weight 0.6 lbs
product size

2 tests

5 reviews for Skin Aging Self-Test Kit

4.8 Rating
1-5 of 5 reviews
  1. Naomi S.
    Reviewer
    November 1, 2025

    This is one of the most unique products I’ve ever tried. I loved how it gave me a snapshot of my skin’s true health, not just how it looks in the mirror. It’s simple, informative, and fun to use. I’d recommend it to anyone who cares about aging well.

    (0) (0)
  2. Leah T.
    Reviewer
    October 30, 2025

    This kit gave me such a clear view of how my skin is aging. I learned that my skin is aging a bit faster than average, which helped me make changes in my routine. The report that came with the results gave me tips that actually felt personalized, not generic advice.

    (0) (0)
  3. Hannah R.
    Reviewer
    October 25, 2025

    Everything about this test was simple and clear. I liked that I could see my results instantly in the app. It also showed my aging speed, which was interesting. I’ve started adjusting my skincare based on that and already notice a difference in how my skin feels.

    (0) (0)
  4. Sophie M.
    Reviewer
    October 12, 2025

    The analysis from this test was super helpful. It showed me that my skin was dehydrated even though it didn’t look dry. After switching to a better moisturizer, I noticed a difference within a week.

    (0) (0)
  5. Carmen D.
    Reviewer
    September 21, 2025

    I didn’t expect the test to be this simple. The instructions were clear and I got my results in minutes. It told me my skin was a little older than my age, which motivated me to drink more water and use my serum consistently. I retested two month later and saw improvement, so I’m convinced it works.

    (0) (0)

Sorry, no reviews match your current selections

Add a review
Skin Aging Self-Test Kit Skin Aging Self-Test Kit
Rating*
0/5
* Rating is required
* Answer is required
Your review
* Review is required
Name
* Name is required
Email
* Email is required
Add photos or video to your review
Connect

instagram.com/idunnsappleskin
facebook.com/idunnsappleskin
x.com/idunnsappleskin

Age Segmented Collection
  • Even-Tone Antioxidant Serum
  • Dermal Quench Hydration Serum
  • Even-Tone Antioxidant Lotion
  • Eternal Boost Anti-Wrinkle Serum
  • Radiant Cell Repair Cream
  • Hydro Lift Anti-Wrinkle Cream
Base Collection
  • Skin Aging Test Kit
  • Age-Defying Serum
  • Age-Defying Day Lotion
  • Age-Defying Night Cream
  • Rejuvenating Cleanser
  • Longevity System I – Early Intervention (Under 45)
Navigation
  • All Products
  • The Science
  • Our Story
  • Track Order
  • Refund & Returns Policy
  • Contact Us
© Idunn's Apple LLC | Privacy Policy | Ethical AI Policy | Terms & Conditions

Products are for non-diagnostic, cosmetic purposes only.