--- title: "NAD+/NADH balance" description: "Measure NAD+ and NADH concentrations and balance in skin cells." image: "https://cosmetic-labs.com/wp-content/uploads/nad-balance-service-1200x1200-1.webp" --- # NAD+/NADH balance > Measure NAD+ and NADH concentrations and balance in skin cells. Source: https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/nad-balance Created: 2025-01-17T07:29:27+00:00 Modified: 2026-10-25T10:18:52+00:00 Author: Emilie SCHOL NAD+/NADH balance | Cosmetic Labs ## What is NAD+/NADH balance? NAD+/NADH balance testing measures oxidized and reduced forms of nicotinamide adenine dinucleotide in skin cells. Their concentrations and ratio help characterize redox and metabolic responses to an ingredient, but do not directly measure ATP production or establish a rejuvenating effect. ### Why do you need this service? NAD+ and NADH measurements help investigate redox-related responses to candidate ingredients in skin cells. Individual concentrations and their ratio should be interpreted with model conditions and complementary evidence, rather than treated as proof of rejuvenation. ## Be the first company on this service page No published company profiles are linked to NAD+/NADH balance or its more specific services yet. Explore the service categories or add an explicitly supported capability to your company profile. [List your company](https://cosmetic-labs.com/account/companies/new) Definition ## NAD+/NADH balance in skin-cell metabolism NAD+ and NADH participate in redox reactions that connect cellular metabolic pathways. Measuring both forms after ingredient exposure provides information about coenzyme availability and redox balance within the tested cell population. ### Quantification and controls Enzymatic cycling assays with suitable optical detection can quantify NAD+ and NADH. Sample handling and extraction must preserve the distinction between the two forms. Measurements should report individual concentrations as well as the calculated ratio, using an appropriate normalization method. Untreated and vehicle-control measurements - Concentration-response and exposure-time comparisons - Viability or cell-number normalization - Checks for test-material interference with the assay ### Metabolic interpretation A whole-cell ratio combines pools from different cellular compartments and does not directly reveal mitochondrial redox status. Nor is a higher ratio universally better. ATP-content assays, oxygen-consumption measurements, or oxidative-damage endpoints can provide complementary evidence when relevant. Reports should relate any change to the model, challenge, and experimental conditions. Findings can inform ingredient selection and metabolic mechanism studies, but do not independently prove stress resistance, cellular rejuvenation, or visible anti-aging benefits. Applications ## Comparing NAD-related responses Enzymatic cycling assays with suitable detection can quantify NAD+ and NADH after controlled exposure. Extraction, analyte preservation and normalisation influence the ratio. Reports should include the individual amounts as well as the calculated relationship. A whole-cell result combines pools from different compartments and does not directly describe mitochondrial redox status. A higher ratio is not universally preferable. ATP content, oxygen consumption and damage endpoints can provide complementary information where relevant. ### Using the findings in development Compare candidate ingredients or concentrations under the same conditions and document uncertainty and interference checks. The measurements do not establish restored mitochondrial function, absence of irritation or visible anti-ageing efficacy, and they cannot supply consumer dosing recommendations on their own. ExplorationLearn more about Skin-Cell Energy & Metabolism StudiesInvestigate skin-cell energy and metabolism through ATP content, respiration, glucose use and redox measurements interpreted as complementary endpoints. Explore another Skin-Cell Energy & Metabolism Studies page on cosmetic-labs.com. #### [Skin energy and metabolism efficacy testing](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/skin-energy) Skin energy testing measures cellular ATP and respiration in skin models to characterize metabolic responses under defined conditions. [Check this service](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/skin-energy) #### [Glucose utilisation](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/glucose-metabolism) Assess ingredient effects on glucose uptake and metabolism in skin cells using consumption, lactate and related measurements of cellular fuel use. [Check this service](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/glucose-metabolism) #### [AMPK/mTOR sensing pathways](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/ampk) Investigate ingredient effects on AMPK and mTOR signalling through phosphorylation and downstream markers of cellular energy and nutrient sensing. [Check this service](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/ampk) #### [Cellular ATP & Energy-Response Studies](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/atp-production) Cellular ATP studies measure energy availability in keratinocytes or fibroblasts to assess ingredient responses under defined culture conditions. [Check this service](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/atp-production) #### [Mitochondrial function](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/mitochondrial) Mitochondrial function testing combines respiration, membrane potential and ATP measurements to investigate ingredient effects in skin cells. [Check this service](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/mitochondrial) #### [Oxygen consumption (OCR)](https://cosmetic-labs.com/services/clinical/efficacy/skin-energy-metabolism/cellular-respiration) Oxygen consumption testing profiles basal and challenged respiration in skin cells to investigate how ingredients alter mitochondrial oxygen use. 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