Cosmedix Define Age-Defying Treatment 45g
Description
Description
Retinol cream with triple AHA complex for anti-aging
For those exploring retinol, one difficult question often arises: how do you start wisely? The world of retinoids is overwhelming — concentration charts, prescription versus over-the-counter formulas, retinol versus retinal versus retinyl esters. Starting too weak misses results. Starting too strong leads to weeks of flaking and sensitivity. Modern science has therefore developed 'gateway formulas': products with chirally correct retinol in moderate concentration, combined with additional exfoliating acids, which work visibly and are comfortably tolerable.
Cosmedix Define is exactly such a product. The cream combines 2% AGP Retinol Complex with a triple alpha hydroxy acid mix of 5% lactic acid, 1% malic acid, and 1% tartaric acid — a combination that enhances the effect of retinol while refining skin texture. Supplemented with resveratrol ferment extract, olive oil, and witch hazel for antioxidant protection and soothing. The official entry route of Cosmedix into retinol action, suitable for all skin types and especially loved by those seeking visible results without the irritation of classic retinol formulas.
Benefits
- Reduces the visibility of fine lines and wrinkles
- Evens skin tone and fades pigmentation spots
- Refines skin texture with a triple hydroxy acid complex
- Hydrates during retinol action with olive oil and aloe
- Suitable as an entry product for a Cosmedix retinol routine
- Gluten-free — even for severe gluten sensitivity or Dermatitis Herpetiformis
Active ingredients
2% AGP Retinol Complex: The signature ingredient of the Cosmedix Define and Refine line. AGP stands for Amino-Acid Glycine-PCA — a complex where retinol is combined with chirally correct amino acids. The ingredient is micro-encapsulated, meaning retinol is released gradually into the skin, causing less irritation than classic retinol. The 2% concentration in Define makes it the ideal starting point before possibly moving on to Refine 4% or higher concentrations.
5% L-Lactic Acid: An alpha hydroxy acid in its chirally correct L-form — the form the body naturally uses and best recognizes. Exfoliates the skin surface and uniquely also hydrates, unlike many other AHAs. At 5% concentration, it visibly refines skin texture without causing pronounced sensitivity.
1% L-Malic Acid: An AHA from apples that works on skin texture and provides gentle exfoliation. Helps reduce the appearance of fine lines and contributes to a more even complexion. Works synergistically with lactic acid for a broader spectrum of exfoliating effects.
1% L-Tartaric Acid: An AHA from grapes that helps regulate the formula's pH balance and supports exfoliating action. The combination of lactic acid, malic acid, and tartaric acid is the "triple hydroxy acid cocktail" that sets Define apart from simpler retinol creams.
Resveratrol Ferment extract and Resveratrol Dimethyl Ether: Two forms of resveratrol — the famous antioxidant from red wine — that complement each other's effects. Protect the skin against photoaging and environmental damage that breaks down collagen and elastin.
Witch Hazel water: A natural astringent ingredient that gently refines pores, soothes mild sensitivity, and helps control excess sebum. A valuable addition for combination skin seeking brightening without dryness.
Olive oil (Olea Europaea): Rich in oleic acid and polyphenols. Hydrates and softens the skin during retinol action, helping to prevent dryness or sensitivity.
L-Proline: An amino acid that forms a building block for collagen — the structural protein that keeps skin firmer and smoother. Supports the effect of retinol on skin firmness.
Galactoarabinan: A polysaccharide from larch tree with clinically studied hydrating and skin-softening properties. Reduces trans-epidermal water loss (TEWL) and helps keep the skin supple during treatment.
Aloe vera, allantoin, and L-bisabolol: Three soothing ingredients that calm the skin during the exfoliating process. Especially valuable during the first weeks of retinol use.
Pichia ferment, ylang-ylang, and grapefruit peel oil: Botanical and fermented ingredients that nourish the skin and give the formula a pleasant, light scent.
How to use it
- Use Define only in the evening — always wear SPF during the day
- Cleanse and tone the skin according to the regular evening routine
- Start with application two to four times per week — not daily at first
- Apply a small amount to cleansed, dried skin
- Gently spread over face and neck, avoid direct contact with eyes and corners of the mouth
- Follow with a hydrating moisturizer if desired for extra comfort
- Build up gradually as the skin tolerates it — some users stay at two to four times per week, others go daily
- Give the skin 4 to 8 weeks to get used to retinol — slight flaking is normal
Suitable for
- For those who want to get acquainted with retinol effects
- First signs of aging and visible fine lines
- Mature skin with deeper wrinkles and loss of firmness
- Pigmentation spots and post-acne discoloration
- All skin types — especially suitable for dry and sensitive skin that poorly tolerates classic retinol
- Not suitable during pregnancy or breastfeeding
Frequently asked questions
What is the difference between Define and Refine?
Both contain the AGP Retinol Complex, but for different skin types and concentrations. Define works with 2% AGP Complex and additionally contains a triple hydroxy acid mix (lactic acid, malic acid, tartaric acid) — suitable for all skin types as an introduction, with an emphasis on anti-aging for mature or dry skin. Refine works with 4% AGP Complex without the extra hydroxy acids — stronger and more targeted for oily, combination, or blemish-prone skin that needs exfoliation. For those new to retinol: start with Define. For those with acne tendency: choose Refine.
What is the difference between Define and Serum 16?
Two very different retinol products. Define is a rich cream with 2% AGP Complex plus additional AHAs — suitable for dry and mature skin as an entry product. Serum 16 is a lightweight serum with 16% LG-Retinex (a combination of retinol and retinal) — suitable for those already experienced with retinol and seeking a more intensive result without the irritation of classic high concentration. Serum 16 is stronger but milder than its number suggests thanks to micro-encapsulation.
When will I see the first results from Define?
The first improvement in skin texture and visible smoothing usually appears after 4 to 6 weeks — retinol works on the natural 28-day cell renewal cycle. For structural reduction of fine lines, wrinkles, and pigmentation spots, consistent use for 8 to 12 weeks is needed. The skin may go through an adjustment phase with light flaking in the first weeks — this is normal and will disappear on its own.
Can I use Define during pregnancy or breastfeeding?
No. Retinol is not recommended during either period due to possible risks to the child's development. Alternatives for anti-aging during pregnancy are available, such as a peptide serum (Affirm or Cell ID), a combination of niacinamide and vitamin C (BrillianCy), or a bakuchiol formula from brands that offer it. Always consult your midwife or skin therapist.
Can I combine Define with vitamin C or other acids?
Not on the same evening. Do not combine Define with other AHAs or BHAs in the same routine — Define already contains a triple AHA complex. Classic routine: vitamin C (Simply Brilliant or BrillianCy) and SPF in the morning, Define in the evening at the desired frequency. Or alternate Define and another active serum on different evenings of the week.
What should I do if my skin flakes or becomes irritated?
Light flaking and mild redness are normal in the first weeks — a sign that the skin is getting used to retinol. In that case, reduce the frequency to once a week and use a rich moisturizing cream like Emulsion or Humidify. Optionally, add C.P.R. Skin Recovery Serum as a soothing layer underneath. If irritation persists after three weeks, pause for a week and restart with a gentler buildup.
How long does a 45g tube last?
When used as directed (starting two to four times per week), a 45g tube typically lasts three to four months. For those who switch to daily use, it lasts about two to three months. This makes a tube well suited for a complete retinol buildup phase of several months.
