This project documentation outlines the scientific framework, ingredient profiles, and synergistic mechanisms of the Keyora HydraCera 5-in-1 system.

This oral nutricosmetic system is engineered for deep hydration, barrier repair, elastic-matrix support, and antioxidant brightening.

Keyora HydraCera 5-in-1 integrates five clinically oriented actives - Hyaluronic Acid (400 kDa, 240 mg), fish bulbus arteriosus-derived Elastin Peptides (100 mg), Ceramide NP (99.5%, 2 mg), Nicotinamide (10 mg), and Vitamin C (200 mg) - to address skin hydration, barrier integrity, elastic-matrix function, and tone.

The system operates through two primary pharmacological frameworks: a Structural Hydration Triad (HA + Elastin + Vitamin C) and a Functional Barrier/Brightening Duo (Ceramide NP + Nicotinamide).

This formulation exemplifies precision nutricosmetics, providing multi-pathway, low-dose-high-efficiency benefits suitable for dry, sensitive, and photo-exposed skin.

Component Analysis: The Structural Hydration Triad

1. Hyaluronic Acid (HA) - 240 mg

• Molecular Weight Specification: The system utilizes 400 kDa medium-molecular-weight Sodium Hyaluronate. This specification is selected for its ideal balance of oral absorption and dermal targeting.

• Bioavailability and Transport: Medium-MW HA is absorbed via paracellular transport in the small intestine, which avoids full degradation and allows molecules to be detectable in plasma within 2–6 hours post-ingestion.

• Clinical Validation: A dosage of 240 mg/day is established as the highest efficacy range confirmed by clinical studies. Research by Sato et al. (2020) demonstrated that this dose significantly increases skin moisture, reduces wrinkle depth, and improves skin roughness over a 12-week period.

• Biological Mechanism: Upon reaching systemic circulation, HA stimulates fibroblast-mediated synthesis of endogenous HA (via HAS2/3), collagen, and elastin. It fills gaps in the extracellular matrix (ECM), enhancing dermal volume and hydration.

2. Elastin Peptide - 100 mg

• Source Homology: Derived from the elastic connective tissue of fish cardiac bulbus arteriosus, this ingredient mirrors the amino-acid motifs of human cutaneous elastin.

• Biochemical Markers: The peptides retain desmosine and isodesmosine motifs, which are the characteristic cross-linking amino acids that constitute the molecular "fingerprint" of functional elastic fibers.

• Regenerative Function: At the 100 mg/day level, these peptides activate fibroblasts to enhance the expression of genes essential for elastic fiber formation, including Elastin, Fibrillin-1, and Lysyl Oxidase (LOX). This process improves dermal recoil, reduces sagging, and attenuates signs of gravity-induced aging.

3. Vitamin C (Ascorbic Acid) - 200 mg

• Structural Support: Vitamin C serves as a mandatory cofactor for prolyl and lysyl hydroxylase, enzymes required for the formation and stabilization of collagen fibers.

• Enzymatic Regulation: It inhibits the expression of Matrix Metalloproteinases (MMP-1, MMP-3, and MMP-12), thereby protecting the ECM from oxidative degradation and photoaging.

• Synergy: It works with collagen, elastin, and HA to strengthen the skin’s internal anti-aging defense system.

Component Analysis: The Functional Barrier/Brightening Duo

1. Ceramide NP (99.5% Purity) - 2 mg

• Molecular Identity: Keyora utilizes NP-type ceramide (Ceramide-3), which naturally accounts for 40–50% of the human stratum corneum and is structurally homologous to human skin lipids.

• Purity vs. Precursors: Unlike common plant extracts that contain low-purity (0.5–1%) glucosylceramides (GlcCer) requiring enzymatic conversion in the gut, Keyora’s 99.5% pure Ceramide NP is directly active upon ingestion.

• Micro-Dose Efficiency: Clinical studies indicate that 2 mg of high-purity Ceramide NP can achieve barrier restoration and moisture-locking effects superior to 200–400 mg of crude plant extracts.

• Barrier Reconstruction: It effectively reduces transepidermal water loss (TEWL) and rebuilds the intercellular lamellae. When combined with cholesterol and free fatty acids, it mimics the natural "3:1:1" lipid ratio of the skin.

2. Nicotinamide (Vitamin B3) - 10 mg

• Lipid Synthesis: Nicotinamide boosts the synthesis of natural moisturizing factors (NMFs), including filaggrin and involucrin, as well as enzymes responsible for endogenous ceramide production.

• Barrier Synergy: Research confirms that co-application of Nicotinamide and ceramides leads to superior barrier repair efficacy compared to either component alone, enhancing lipid bilayer integration.

• Tone Modulation: It inhibits the transfer of melanosomes from melanocytes to keratinocytes, reducing hyperpigmentation and improving skin tone evenness and radiance.

• Cellular Metabolism: It serves as a precursor to NAD+, supporting cellular energy metabolism, antioxidant defense, and DNA repair.

Formulation Philosophy and Safety Standards

Precision Dosing Strategy

The system adheres to a "Low-Dose, High-Efficiency" model, using clinically validated "golden doses" to achieve synergy between structure and function without unnecessary lipid burden or metabolic load on the liver and kidneys.

Safety and Compliance

The dosages are calibrated to remain well within globally recognized safety thresholds.

• Hyaluronic Acid: 240 mg is significantly below the EFSA-recognized upper limit of 480 mg/day.

• Vitamin C: 200 mg is well within the EFSA safety threshold of 1000 mg/day.

• Nicotinamide: Effective and safe for long-term use at the 10 mg intervention dose.

Intended Outcomes

Long-term use is targeted toward individuals with dry, sensitive, or barrier-damaged skin, as well as those suffering from environmental fatigue or photo-exposure.

Expected clinical outcomes include sustained dermal hydration, improved barrier stability, reduced roughness, and enhanced skin tone clarity.