Ckd Low Molecular

Standard high-molecular-weight collagen (typically 100,000 to 300,000 daltons) is far too large to penetrate the skin barrier - it remains on the surface as a film-forming humectant. Hydrolysed collagen peptides (around 1,000 to 3,000 daltons) penetrate the outer skin layers more readily but still face diffusion limits in the deeper epidermis. At 300 daltons, CKD's Low Molecular Weight 300 collagen sits below the 500-dalton permeation threshold widely cited in dermatology literature for meaningful transdermal absorption.

In practice, smaller collagen fragments in the skin stimulate fibroblasts (the cells that produce structural collagen) and provide direct hydration support at a deeper level than high-molecular alternatives. The '300' in the product name is both a marketing differentiator and a specific technical claim about molecular weight that justifies the line's anti-aging positioning.

The 'retino' component in 'retinocolagen' refers to a retinol derivative - an active widely recognised for stimulating collagen synthesis, accelerating cell turnover, and reducing fine lines. CKD pairs this with the 300-dalton collagen to create a dual approach: the retinol active tells the skin to produce more of its own collagen, while the low-molecular-weight collagen provides an exogenous supply of small collagen fragments that reach the dermis.

This combination is what positions the Retinocolagen line beyond a standard collagen or standard retinol product. You are getting cell-renewal stimulation (retinol side) and deep-penetrating collagen replenishment (low molecular side) simultaneously. Products in the line that explicitly combine both actives are the more intensive anti-aging options; the cleansing foam and toners provide the retinocolagen base without the full concentration of the creams.

The Retinocolagen Pore Cleansing Foam 150ml is the line's first step - a low-foam cleanser that incorporates the 300-dalton collagen and retinol base into the cleansing formula. Using a cleansing foam from the same line as the rest of your routine ensures no ingredient conflict at the first step, and the collagen fragments in the cleanser may provide a minor conditioning benefit even in a rinse-off format.

Three toners serve different functions in the layering sequence. The Grain Toner 80ml is a smaller-format exfoliating toner - 'grain' typically signals gentle AHA or PHA exfoliation that prepares skin for follow-up actives. The Crystal Toner 80ml (listed in the Experience Special set) is a concentrated essence-toner with higher active load. The Collagen Ligation Toner 250ml is the full-size daily toner, with 'ligation' suggesting a cross-linking function that improves elasticity. Apply in sequence if using multiple toners: Grain first (exfoliate), then Crystal or Ligation on subsequent days or layers.

The Retinocolagen First Essence 150ml is a lightweight essence applied after the toner and before any serum or cream. First essences in K-beauty are often fermented-yeast or concentrated active formulas that improve skin's receptivity to follow-up products - effectively boosting absorption efficiency. At 150ml, the First Essence is a generous-format daily-use product designed to cover the whole face generously for three to four months of use.

The First Essence serves as the primary delivery vehicle for the 300-dalton collagen at the essence step - it is lighter than the cream or concentrated cream but applies a significant collagen dose to the entire face before richer products lock the skin barrier down. For users who want the maximum collagen exposure at this step, the First Essence is as important as the cream products.

The Retinocolagen Cream 40ml is the standard daily moisturiser for the line - balanced between active concentration and daily wearability. The Concentrated Cream 25ml is a higher-active formulation in a smaller size, designed for targeted intensive treatment or for users who want the maximum collagen and retino activity in the moisturiser step. At 25ml, it provides six to eight weeks of daily use at a smaller dose than the full cream.

For a daily routine on normal to combination skin: the 40ml Cream is the practical choice - it covers the moisture step with the line's core actives without overloading sensitive skin with the maximum concentration. For mature, significantly dehydrated, or loss-of-elasticity-focused skin, the Concentrated Cream provides the stronger active dose at the moisturiser step.

The Gual Thread Neck Cream 50ml brings the Retinocolagen 300 actives to the neck area, which ages at a different rate from the face due to thinner skin and lower sebaceous gland density. 'Gual Thread' suggests a lifting or firming thread-like active alongside the retinocolagen base. The neck and décolletage are frequently underserved in skincare routines, and CKD's neck cream provides the same line-consistent active delivery to this area that the face cream provides to the face.

Apply upward strokes from the collarbone to the jaw after the face cream step in your routine. At 50ml, the neck cream provides three to four months of daily use assuming application to neck and upper chest only. For users already using the face cream, the neck cream completes a head-to-upper-chest Retinocolagen routine without switching product lines.

The Retinocolagen Water Photostick 10g is a solid-format moisture and active stick - applied directly to the face by swiping the stick over clean skin or over makeup as a moisture refresh. The 10g format is a portable, pocket-sized complement to the full routine for midday hydration or touch-up. The 'photo' component suggests the formula is also designed for post-UV recovery - applying after sun exposure to rehydrate and add collagen support when skin is most receptive.

The Retinocolagen Pore Elasticity Mask is a sheet mask format delivering the 300-dalton collagen and retino actives in a concentrated single-use dose. Used two to three times per week, it adds an intensive collagen treatment session on top of the daily routine. Apply to freshly cleansed skin after toner, leave for 15 to 20 minutes, remove the sheet, and press in the remaining essence rather than rinsing - then skip the cream step, as the mask serum covers that function on mask nights.

Core daily routine: Pore Cleansing Foam → Grain Toner (exfoliate 2 to 3 times per week) or Collagen Ligation Toner (daily) → First Essence → Retinocolagen Cream or Concentrated Cream → Gual Thread Neck Cream (apply immediately after face cream, before it fully absorbs). Add the Crystal Toner between the Grain Toner and First Essence for additional active layering on intensive routine days.

Weekly additions: Pore Elasticity Mask 2 to 3 times per week replacing the cream step on mask nights. Water Photostick as midday refresh or after outdoor activities. The most essential products to start with if you are new to the line are the First Essence, the Collagen Ligation Toner, and the Cream - these three cover the toning, essence, and moisture steps with the highest daily active exposure.