Microencapsulated Retinol Renewal Serum

  ‘Vitamin C in the morning, Vitamin A in the evening’ is a classic anti-ageing skincare routine that is widely recognised globally; however, many consumers and beauty professionals find it difficult to distinguish between the main Vitamin A ingredients: retinol, retinaldehyde, HPR and psoralen. These four ingredients differ significantly in terms of their mechanisms of action, gentleness and formulation challenges. The following section provides an objective analysis based on skin physiology, accompanied by formulation recommendations from Aisen. Vitamin A Metabolism Pathway: The Metabolic Pathway Influences Efficacy and Irritation The key active ingredient responsible for its effects on the skin is retinoic acid, a prescription-only medical ingredient that is highly irritating; as such, regulations in various countries prohibit its inclusion in general skincare products. All vitamin A ingredients available on the market are precursors to retinoic acid and must undergo enzymatic conversion within the skin to become active. The conversion pathway is as follows: retinol esters → retinol → retinaldehyde → retinoic acid. As a general rule: the more conversion steps involved, the lower the risk of irritation, but the theoretical upper limit of efficacy at the same concentration is lower; the fewer conversion steps, the higher the theoretical anti-ageing potential, whilst the likelihood of irritation increases accordingly. Ultimately, the user experience is determined by the formulation’s delivery technology.   1. Retinol (Retinol A): The classic entry-level form of vitamin A It requires a two-step oxidation process to convert into retinoic acid before it becomes effective; there is ample clinical research on this, and it is widely used in the market. Drawbacks: It is prone to oxidation and inactivation when exposed to light, oxygen or high temperatures, and may cause dryness, redness and flaking in first-time users. Suitable for: those with a healthy skin barrier and good tolerance, and those trying retinol for the first time.   2. Retinaldehyde: An Advanced, Highly Effective Anti-Ageing Ingredient It becomes active after just a single oxidation step, and at equivalent concentrations, its bioavailability is significantly higher than that of retinol. Visible improvements in fine lines, dullness and enlarged pores can be observed after 6 weeks of continuous use at low concentrations. Drawbacks: It is sensitive to light and oxygen; without a sustained-release formulation, it may irritate the skin, and it requires sophisticated manufacturing processes. Suitable for: Those with healthy skin who have been using vitamin A long-term and are seeking rapid anti-ageing results.   3. HPR (hydroxypinacolone retinoate): a low-irritation vitamin A derivative It binds directly to the skin's vitamin A receptors without the need for conversion. It is exceptionally stable, retaining over 90% of its activity after 12 weeks of storage at 40°C under light, and is far less irritating than traditional vitamin A. Drawback: its fat-soluble nature results in relatively poor transdermal absorption, so it requires the use of delivery technologies to enhance bioavailability. Suitable for: sensitive skin and those with vitamin A intolerance. For brands targeting the sensitive-skin anti-aging segment, a peptide-based alternative such as a Copper Peptide Repair Serum offers a complementary route—supporting collagen production and barrier repair without any vitamin A-related irritation.   4. Psoralen: A gentle, plant-based alternative for anti-ageing Extracted from Psoralea corylifolia seeds, its structure differs from that of retinol, yet it can regulate genes associated with anti-ageing. A controlled trial published in the British Journal of Dermatology showed that, after 12 weeks of use, there was no significant difference in wrinkle reduction or skin brightening between 0.5% psoralen and 0.5% retinol; the psoralen group demonstrated better tolerability and no photosensitivity, making it suitable for daytime use. Suitable for: those with sensitive skin, those who prefer natural ingredients, and those seeking daytime anti-ageing care. Aisen's Bakuchiol + Peptide Firming Serum is built on this logic, delivering retinol-comparable firming without irritation, making it ideal for clean beauty and pregnancy-safe skincare lines.   A quick guide in one table: how to choose between four types of retinol Dimensions of comparison Retinol Retinal HPR (hydroxypinacolone retinoate) psoralen Speed of anti-ageing results A gradual process requiring long-term commitment Fast-acting Intermediate A slow start, but promising long-term results Gentleness on the skin Generally, may be poorly tolerated Moderate; non-sustained-release; may cause irritation Excellent, suitable for sensitive skin Excellent; very little stinging or peeling Composition Stability Poor; prone to oxidation and failure Generally speaking, there are certain storage requirements. Excellent Excellent, no risk of photosensitivity Suitable for the following skin types Healthy, resilient skin Healthier, More Radiant Skin Suitable for all skin types (including sensitive skin) Suitable for all skin types; ideal for sensitive skin and during pregnancy   Aisen Formula Combination Options Drawing on its patented nano-encapsulation technology and a portfolio of over 3,000 market-proven, mature formulations, Aisen specifically addresses the formulation challenges associated with each type of ingredient:   1. Retinol / Retinaldehyde: Encapsulated in NLC (nanolipid) nanoparticles and liposomes to shield the active ingredients from light and oxygen, ensuring sustained release to minimise irritation and reduce peeling and redness. This approach powers our Microencapsulated Retinol Renewal Serum, which delivers high-potency anti-aging benefits with significantly reduced irritation. EU regulations stipulate that the maximum concentration of retinol-based ingredients in leave-on skincare products is 0.3 per cent, and formulations are developed in accordance with local compliance standards.   2. HPR (hydroxypinacolone retinoate): Combined with a nano-emulsion and a mild penetration-enhancing system, it improves transdermal absorption and enhances formulation stability;   3. Psoralen: Liposomes / nano-emulsions improve water dispersibility and absorption rates; combined with Centella asiatica for simultaneous anti-ageing and repair. For brands building a complete morning-and-evening routine, our Vitamin C12 Serum makes an ideal daytime companion—combining 12% pure vitamin C with salicylic acid for brightening and antioxidant protection.   Rather than relying solely on high-concentration ingredients to enhance efficacy, we strike a balance between effectiveness, gentleness and long-lasting stability. Drawing on our proven delivery technologies and formulation expertise, Aisen develops anti-ageing skincare products tailored to all skin types worldwide.  

  According to the ‘2026 Global Skincare & Personal Care Trends’ report, the skincare industry is undergoing a fundamental shift: the once-prevalent focus on competing with single ‘star’ ingredients and high-concentration formulations is gradually coming to an end. Consumers no longer blindly pursue short-term, immediate results; instead, new concepts such as skin longevity management, biocompatible formulations, microbiome synergy, neurocosmetics and sustainable beauty have become the core drivers, setting new standards for product development, user experience and brand value creation. As an R&D-focused enterprise deeply rooted in the beauty OEM/ODM sector, Guangzhou Aisen Biotechnology remains at the forefront of global skincare technology. Leveraging technologies such as nano-encapsulation, multiple national invention patents and a comprehensive library of over 3,000 formulations, the company aligns closely with the mainstream trends of 2026, providing global brands with one-stop solutions ranging from custom formulation to mass production.   Trend 1: Skin Longevity Management – From ‘Anti-Ageing’ to ‘Extending the Healthy Lifespan’ Traditional anti-ageing treatments often focus on superficial improvements such as reducing wrinkles and firming the contours, whereas the new trend advocates 'skin longevity'—delaying cellular ageing, strengthening the skin's natural repair capabilities, and extending the skin's healthy cycle. Aisen utilises liposome encapsulation technology to slowly release active ingredients such as retinol and HPR, minimising irritation and making the products suitable for long-term daily use—an approach exemplified by our Microencapsulated Retinol Renewal Serum , which delivers high-potency anti-ageing benefits without the redness or peeling. Simultaneously, Aisen combines signalling peptides (such as palmitoyl pentapeptide-4) with a complex antioxidant system to work in synergy from both inside and out to combat oxidative damage. Our Copper Peptide Repair Serum further demonstrates this logic, harnessing peptide science to support collagen production and skin renewal while remaining gentle enough for sensitive skin. Furthermore, the "Skin Longevity Serum", centred on EGF, NAD and ectodine, prolongs the retention time of active ingredients within the skin to continuously activate its self-healing functions; for brands looking to add brightening to their longevity range, our 12% Vitamin C + Salicylic Acid Serum offers antioxidant protection alongside visible radiance improvement. Paired with a barrier repair series featuring a lipid composition mimicking the body's natural lipids, Aisen establishes an integrated product matrix combining "anti-ageing and repair".     Trend 2: Biocompatible Formulations – Enabling the Skin to ‘Understand’ the Ingredients Powerful ingredients can easily cause sensitivity and inflammation if they conflict with the skin’s natural physiology. The core of a biocompatible formulation lies in the use of lipids and signalling molecules that are identical or similar to the skin’s own structure, gently ‘persuading’ the skin to initiate repair. Aisen adheres to this principle, creating a complex of biomimetic ceramide repair products (a blend of ceramides NP, AP and EOP with cholesterol and free fatty acids) to precisely seal cracks in the skin barrier. For highly active ingredients such as retinol and acids, we employ NLC or cyclodextrin inclusion technology—selected based on the characteristics of each ingredient—to achieve sustained-release and reduced irritation. These are further combined with soothing signalling molecules such as bisabolol, ensuring a true balance between potency and gentleness.     Trend 3: Microecological Synergistic Care – From ‘Sterilisation’ to ‘Harmonious Coexistence’ By 2026, microbiome-based skincare will no longer rely on harsh antimicrobial agents, but will instead use scientifically formulated products to create conditions conducive to the growth of beneficial bacteria, thereby achieving homeostasis through the skin's own ecosystem. Aisen has established a comprehensive microbiome product line covering cleansing and serums: its cleansers utilise mild surfactants such as amino acids and APG to minimise disruption to the skin's microbiome, as seen in our Goat Milk + Silk Protein Soap Bar —a solid cleanser formulated with caprine milk lipids and silk fibroin that cleans without stripping. Subsequent leave-on products (such as toners and serums) are enriched with prebiotics like inulin and α-glucan oligosaccharides, as well as postbiotics such as Bifidobacterium bifidum ferment lysate and Lactobacillus ferment lysate, to simultaneously repair both the physical and microbial barriers. For those with sensitive skin, Aisen offers a full range of hypoallergenic microbiome care sets, which are safe and gentle, suitable for long-term maintenance.     Trend 4: Neuro-aesthetics and personalised holistic care – creating a unique experience As a sensory organ, the skin is closely connected to the brain, and regulating the ‘skin-brain axis’ has become a cutting-edge area of research. Aisen has developed a Neuro-Soothing Serum, enriched with neuroactive ingredients such as GABA (gamma-aminobutyric acid), to help alleviate stress-related skin discomfort. For those seeking portability and instant relaxation, Aisen has also launched a range of soothing essential oil roll-ons. Formulated with aromatherapeutically validated soothing essential oils such as lavender, Roman chamomile and bergamot, the roll-on design allows for precise application to pulse points such as the temples, behind the ears and the wrists. Upon application, volatile aromatic molecules influence the limbic system via the olfactory pathway. Combined with physical massage, this synergistically soothes tension and improves stress-related skin concerns. Aisen offers flexible customisation options for essential oil roll-on formulations (single or blended) and packaging styles (minimalist, therapeutic, or premium), helping brands create convenient skincare products that combine neurocosmetic benefits with a sense of ritual.     How does Aisen empower brands? Leveraging its extensive technical expertise and flexible production model, Aisen is able to freely combine technologies and formulations to suit the positioning, target audience and efficacy claims of different brands. We support small-batch trial production (lowering the barrier to entry for new products) and can also undertake large-scale mass production. From stability testing and preservative challenge tests to regulatory compliance testing and packaging material selection, we provide end-to-end support services, significantly reducing the costs and risks associated with bringing a brand to market.   In the skincare market of 2026, competition will ultimately return to the fundamentals of dermatological science. If you wish to develop targeted functional skincare ranges (anti-ageing, microbiome, neuro-soothing, etc.) based on the latest trends, please contact the Aisen team for a free formulation consultation and sample production service. Let us work together to create best-selling products with enduring appeal.   Related products Bakuchiol + Peptide Firming Serum