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Crystal Retinal 6
A gentle, well-formulated 0.06% retinal night serum for regular vitamin A users, priced well above budget retinal alternatives.
7.9
Good
Beauty score
#6 of 9 serums
Community
—/10
- Format
- Serum
- Size
- 1 fl oz
- Price per oz
- $85.76 / oz
- Price tier
- Prestige
Made for: Normal skin · Combination skin · Dry skin · Mature skin
Last reviewed November 2, 2026 by our editors · How we score
The verdict
A gentle, well-formulated 0.06% retinal night serum for regular vitamin A users, priced well above budget retinal alternatives.
Crystal Retinal 6 is the middle step of Medik8's retinaldehyde ladder, a 30 mL night serum with 0.06% retinal that the brand recommends for regular vitamin A users. Reddit users recommend the Crystal Retinal line as a gentler retinoid option and as a bridge from retinol toward tretinoin. It suits people who have finished a tube of Crystal Retinal 3 or tolerate retinol well. The main caveats are the $87 price and a formula that includes vanilla and tonka extracts despite 'no artificial fragrance' claims.
Best for
- Retinol users ready to move up to retinaldehyde
- Fine lines and uneven texture in normal to dry skin
- People who prefer a slow, stepwise retinoid routine
What we love
- 0.06% retinaldehyde, a step up from Crystal Retinal 3 for regular vitamin A users
- Part of a six-strength ladder, so users can build tolerance gradually
- Airless pump tube with a stability system meant to protect the retinal
- Includes hyaluronic acid, vitamin E and squalane to offset dryness
- Certified by the Vegan Society, per Medik8
Worth knowing
- $87 for 30 mL is expensive for a retinoid serum
- Contains vanilla and tonka extracts and coumarin, despite 'no artificial fragrance' marketing
- Too strong as a first retinoid; Medik8 itself suggests starting at Crystal Retinal 1 or 3
- Not recommended during pregnancy or breastfeeding, per Medik8's FAQ
How it scored
The breakdown.
Five factors, weighted for formulas. Here’s our working.
7.9Good
Beauty score out of 10. Brands can’t pay for placement — ever.
- Results30%8.3
Medik8 cites a 12-week, 33-person study on one tube of Crystal Retinal 6, and Reddit users credit the Crystal Retinal line with anti-aging and clogged-pore improvements, though evidence is mostly brand data and anecdotes.
- Formula & ingredients20%8.6
A meaningful 0.06% retinaldehyde dose in a stabilized, encapsulated base with hyaluronic acid and antioxidants, packaged in an airless tube; the vanilla/tonka extracts are the main formula drawback.
- Texture & experience15%8.1
Dosed by pump (2 pumps, about 100 uses per tube), but Medik8 and Reddit users still advise a slow ramp-up and a moisturizer.
- Value20%6.2
At $87 for 30 mL it costs far more than budget retinal serums, such as The Ordinary's, that Reddit users name as cheaper alternatives.
- Community love15%8.3
Frequently recommended on r/SkincareAddiction as a top retinal pick, with the strength ladder praised; not every commenter likes the brand overall.
Beauty profile
Inside the bottle.
Texture
Lightweight cream-serum dispensed by pump (2 pumps per use, about 100 uses per tube, per Medik8)
Format
Serum
Fragrance
Contains fragrance — No artificial fragrance per Medik8, but the INCI lists vanilla and tonka bean extracts and coumarin
Size
1 fl oz / 30 ml
Key ingredients
Ingredient encyclopedia →- RdRetinalRetinoids — ingredient guide
- HaHyaluronic acidHydrators — ingredient guide
- VeVitamin EAntioxidants — ingredient guide
- VcVitamin CAntioxidants — ingredient guide
- SqSqualaneHydrators — ingredient guide
What’s in it: 0.06% retinaldehyde (Crystal Retinal 6) in Medik8's patented stability system with cyclodextrin; supporting sodium hyaluronate, tocopheryl acetate, squalane and vitamin C derivatives (3-O-ethyl ascorbic acid, tetrahexyldecyl ascorbate).
How to use
In the evening after cleansing, apply 2 pumps to face and neck and follow with a moisturizer; phase it in gradually (twice a week for 2 weeks, every other night for 2 weeks, then nightly) and wear sunscreen the next morning.
Free from (brand-stated)
- parabens
- alcohol
- artificial fragrance
Claims & certifications
- Vegan
Full ingredient list (INCI)41 ingredients · key actives highlighted · as listed by the brand
- Water,
- Caprylic/Capric Triglyceride,
- Glycerin,
- Isododecane,
- Cetearyl Olivate,
- Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer,
- Cyclodextrin,
- Cetearyl Alcohol,
- Sorbitan Olivate,
- Tocopheryl Acetate,
- Squalane,
- Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer,
- Hydroxyacetophenone,
- 3-O-Ethyl Ascorbic Acid,
- Phenoxyethanol,
- Hydroxypropyl Methylcellulose,
- Sodium Hyaluronate,
- Tetrahexyldecyl Ascorbate,
- Rubus Chamaemorus Seed Oil,
- Pentylene Glycol,
- Daucus Carota Sativa (Carrot) Seed Oil,
- Retinal,
- Alumina,
- Isostearic Acid,
- Lecithin,
- Sodium Polyaspartate,
- Polyglyceryl-3 Polyricinoleate,
- Lonicera Japonica (Honeysuckle) Flower Extract,
- Lonicera Caprifolium (Honeysuckle) Flower Extract,
- Polyhydroxystearic Acid,
- Disodium EDTA,
- Ethylhexylglycerin,
- Stearic Acid,
- Polysorbate 60,
- Sorbitan Isostearate,
- BHT,
- Vanilla Planifolia Fruit Extract,
- Dipteryx Odorata Bean Extract,
- Coumarin,
- Red 4,
- Titanium Dioxide/CI 77891.
Formulas change. Always check the packaging, and patch-test if your skin is reactive.
Creator video reviews
Watch it in action.
Real reviews, try-ons and wear tests from independent creators — verified with TikTok and YouTube and labelled when sponsored.
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What people say
Straight from the source.
Verbatim from Reddit, forums, blogs and the beauty press — linked, so you can read the whole thread.
4 verbatim quotes · 3 positive · 1 mixed
r/tretinoinPositive
I used Medik8 Crystal Retinal 3 and then 6 before starting tret to get my skin used to retinal, which made the transition to tret much easier
r/SkincareAddictionPositive
Get her a tube of the CR3 and one of CR6, that way she can slowly integrate it into her routine and move up slowly to avoid any side effects. I had to do 1 per week for the first month, but everyone is different.
r/SkincareAddictionPositive
I've had success with azelaic acid for dark spots/hyperpigmentation and medik8 crystal retinal for overall anti-aging instead.
r/SkincareAddictionMixed
Both are trash brands but Medik8 "Crystal Retinal" is probably more stabel and definitely more effective than any retinol product.
Price & value
Is it worth it?
Typical price
$87.00
for 1 fl oz / 30 ml
Per ounce
$85.76
DrugstoreMid-rangePrestigeLuxury
Roughly 3.9× the typical price per ounce for serums. Our value score: 6.2/10 for a prestige pick.
Price checked November 2026 at a non-Amazon retailer. Prices change — retailers show the current one.
Where to buy
We may earn a commission when you buy through links on this page. It never affects our scores or what we recommend. How we make money
Community
What members noticed.
Ratings, skin types and the benefits people actually saw — logged on the Benefit Wheel.
No member ratings yet.
Tried it? Your score — and your skin or hair type — helps the next person decide.
Highlighted: what it’s built to do.
Discussion
No discussions yet.
Tried Medik8 Crystal Retinal 6? Ask a question or share how it’s working for your skin or hair — you’ll be the first.
FAQ
Good questions.
Should I start with Crystal Retinal 6?
Medik8 positions Crystal Retinal 6 (0.06% retinaldehyde) for regular vitamin A users and recommends Crystal Retinal 1 for sensitive skin and Crystal Retinal 3 for new vitamin A users. The brand suggests finishing at least one tube of your current strength before moving up.
How often should I apply it?
Medik8 recommends phasing it in: twice a week for the first 2 weeks, every other night for the next 2 weeks, then every night. Apply 2 pumps after cleansing in the evening, follow with moisturizer and use sunscreen the next morning.
Can I use it with vitamin C?
Yes. Medik8 recommends its 'Vitamin C + A' approach, with vitamin C in the morning and Crystal Retinal at night.
Is it fragrance-free?
Medik8 says it has no artificial fragrance, but the published ingredient list includes vanilla fruit extract, tonka bean extract and coumarin. Fragrance-sensitive users should patch test first.
Sources we checked (8)
- us.medik8.com/products/crystal-retinal
- us.medik8.com/products/crystal-retinal.json
- medik8.com/pages/the-founder
- dermstore.com/p/medik8-crystal-retinal-6-serum-30ml/12810727/
- shop.tiktok.com/us/pdp/crystal-retinal-serum-by-medik8-vitamin-a-for-wrinkle-smoothing/1729464026602180749
- reddit.com/r/tretinoin/comments/1wtksag/i_owe_tret_my_whole_entire_life/pcva07l/
- reddit.com/r/SkincareAddiction/comments/1wbebfg/product_request_looking_for_a_good_antiaging/p8qhq6h/
- reddit.com/r/SkincareAddiction/comments/1wbebfg/product_request_looking_for_a_good_antiaging/p8pj0zu/
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