走进任何专业的电子烟店，货架上琳琅满目：冰芒果、草莓芝士、蓝莓荔枝、皇室烟草……然而，一股低调的潮流逐渐兴起，一部分电子烟爱好者选择将体验简化至极致：仅用丙二醇（PG）、植物甘油（VG）及可选的尼古丁。无色无甜，无香无味，唯有纯粹之物。 base.This phenomenon — often called "base-only" or "unflavored" vaping — is not merely a niche curiosity. It is a deliberate consumer choice driven by a convergence of health considerations, regulatory dynamics, DIY culture, and sensory preference. For manufacturers, flavor formulators, and B2B buyers in the e-liquid supply chain, understanding this movement offers critical insight into market segmentation, regulatory risk, and product innovation strategy.本文将全面剖析无味电子烟的技术与行为层面：谁在使用、为何如此、科学对其基础液的评价，以及这对未来电子液调味产业的意义。我们借助同行评审的研究、监管文件和行业市场数据，勾勒出这个悄然崛起、正静静改变电子液产品理念与市场策略的新兴细分领域。
1. Defining "Unflavored" in the Context of E-Liquids
1.1 什么是无调味电子液体？
An "unflavored" e-liquid — also referred to as a base liquid, blank base, or unflavored base — is an e-liquid formulation that contains no intentionally added flavor compounds. It typically consists of:
Propylene Glycol (PG): A colorless, odorless synthetic liquid with USP-grade purity, acting as a solvent and carrier for nicotine and other active components. PG contributes to "throat hit."
Nicotine (optional): Present as freebase nicotine or nicotine salt at concentrations from 0 mg/mL to 50+ mg/mL, depending on the consumer's preference and the device type.
1.2 The Regulatory Gray Zone: Is Unflavored Really "Flavorless"?
This is a technically and legally nuanced question. In 2021, the U.S. Food and Drug Administration (FDA) clarified in its enforcement guidance that unflavored e-liquids — particularly "base liquids designed to have flavors added to them" — are still classified as "flavored" products若用于调味，其将受到《烟草控制法》的规制。这一裁定采用功能性定义：任何主要作为风味载体的产品，可能需遵循与传统调味电子液相同的PMTA（上市前烟草产品申请）要求。However, for end-consumer products sold as "plain base" for personal vaping — not as DIY additives — the regulatory treatment varies significantly by jurisdiction. Understanding these nuances is essential for manufacturers and brand owners operating across multiple markets.
二、市场背景：无调味市场的规模有多大？
全球电子液市场估值约为 USD 5.25 billion in 2026预计到2031年，这一市场规模将达到68.9亿美元，年复合增长率为7.69%，据Mordor Intelligence（2026）预测。在此市场中，调味电子液占据主导地位——占比…… 95.48%占2025年总收入的比例。尽管无味品类规模较小，但其增长速度明显快于其他类别。 9.35% CAGR到2031年，将超越多个成熟的风味类别，保持领先。这种不对称的增长预示着结构性的变革。多重因素同步推动消费者倾向于无味选择：
主要市场（加州、欧盟成员国、部分亚洲地区）更为严格的口味监管
一种不断崛起的DIY文化，消费者将自己的浓缩液调配于中性基础之上
追求健康、希望减少香味剂化学物质暴露的电子烟用户
Experienced vapers experiencing "flavor fatigue" who prefer the clean taste of pure base
要理解为何有人偏爱无味基础液，必须洞悉丙二醇与植物甘油本身的固有感官特性。这些物质并非化学惰性，它们具有独特的物理与感官属性：根据一项发表在...的研究， Aerosol Science and Technology（泰勒与弗朗西斯，2020年）研究显示，在无尼古丁电子液中提高PG/VG比例，会显著影响颗粒损失率与气溶胶密度。这对无味吸烟者具有直接的实用意义：PG/VG比例成为关键参数。 primary lever旨在打造无味的电子烟体验，满足个性化需求。
3.2 尼古丁在感官体验中的作用
对于包含尼古丁的纯基础液用户，尼古丁本身在感官体验中起着重要作用。浓度超过6毫克/毫升的游离碱尼古丁会带来特有的 peppery, alkaline "bite"喉咙后部的那种感觉——许多有经验的吸烟者将其视为真实与满足的象征。而尼古丁盐配方（质子化尼古丁）则能提供更高浓度的尼古丁，且口感更为顺滑，适用于口吸（MTL）设备。This pharmacological dimension is not trivial. Research from the National Institutes of Health (NIH) indicates that the form of nicotine — freebase versus salt — significantly influences the user's puffing behavior, absorption rate, and satisfaction response. For unflavored vapers seeking pure nicotine delivery without flavor masking, understanding nicotine chemistry is essential.
支持无味电子烟者的重要论点在于：减少化学成分，便能降低有害热降解产物的风险。然而，必须指出，丙二醇与植物甘油本身亦具有特殊性质， not without risk themselves, and the apparent "purity" of a base liquid does not render it harmless — a nuance that responsible manufacturers must communicate clearly.
此类典范将减害置于首位。其成员多经过深入研究电子液体的化学成分，得出结论：基础液中添加剂越少，体验越安全。他们多为由吸烟转变而来的用户，将电子烟视作戒烟或替代工具，而非娱乐消遣之所。对于注重健康的极简主义者而言，香味添加剂是一种不必要的变数——一组在实际蒸发条件下安全性尚未完全了解的化学化合物。此观点具有科学依据：正如美国疾病控制与预防中心（CDC）在2019年的EVALI（电子烟或蒸汽产品相关肺损伤）调查中所记录，某些香味添加剂——尤其是乙酰酯——即使来自无害来源，也可能带来严重的吸入风险。有关不安全香味成分的更详细分析，请参阅我们的技术资料： Flavor Ingredients to Avoid in E-Liquids: A Practical Guide.
在实施严格口味禁令的地区——包括美国的多个州、英国在某些TRPR解读下，以及欧盟部分地区——部分吸烟者转而选择无味基础作为规避监管的策略。风味电子液可能受到限制、征税差异，或需难以获得的零售许可。This is not a fringe behavior. Mordor Intelligence's 2026 market analysis identifies flavor regulation as a key structural driver pushing consumers toward unflavored and tobacco-flavored product alternatives. As flavor bans proliferate, this archetype will grow in proportion.
4.4 对味道感到疲惫的老手
Long-term vapers — those with three or more years of daily use — frequently report experiencing "vaper's tongue," a temporary or semi-permanent desensitization of olfactory receptors to specific flavor molecules. When every flavor begins to taste muted or identical, many veteran vapers retreat to an unflavored base as a palate cleanser or permanent preference.This phenomenon has a straightforward physiological explanation: olfactory receptor cells exhibit adaptation when exposed to the same chemical stimuli repetitively. Without the novelty of new flavors to stimulate engagement, the base liquid's inherent textural and thermal properties become the primary points of sensory focus.
在无味社区中，一个普遍的误解是，成分越少，安全性越高。科学的实质远比表面复杂。虽然确实，缺少香味化合物减少了一层化学复杂性， PG and VG are not chemically inert在蒸发条件下。一项发表于2025年的全面研究显示 Toxicology Letters (Elsevier) titled "Toxicity of Humectants Propylene Glycol and Vegetable Glycerin in E-cigarette Aerosols" demonstrated that PG/VG aerosols — even without nicotine or flavoring — can induce oxidative stress, airway inflammation, and dysfunctional mucus secretion in airway epithelial cell models. The severity of effects was correlated with PG/VG ratio and vaporization temperature, with higher PG ratios and temperatures producing more adverse outcomes.这并不否定无味策略的合理性，但强调了 base liquid quality, purity, and PG/VG ratio selection并非微不足道的选择——它们直接关系到气溶胶的安全性。
Diacetyl and acetyl propionyl (used in butter and cream flavors): Linked to bronchiolitis obliterans ("popcorn lung") at occupational inhalation exposures; present in many commercial e-liquids at detectable levels.
苯甲醛（樱桃/杏仁香味）：在标准电子液配方中可达到的浓度下，对人体支气管上皮细胞具有细胞毒性。
肉桂醛（肉桂香味）：已显示能降低气道上皮纤毛的摆动，可能影响纤毛清除功能。
薄荷醇与薄荷酮（薄荷味）：与增加尼古丁吸收、降低戒烟动力，以及引起气道干燥与敏感有关。
In this context, the unflavored vaper's logic is scientifically coherent: by eliminating all flavor additives, they eliminate the principal source of known and suspected商业电子液中的吸入毒性物质。仅从PG/VG本身是否可接受是一个风险与收益的独立问题，但降低危害的观点是合理的。
5.3 比较性气溶胶成分研究
多项对比气溶胶研究——包括加州大学旧金山分校与罗斯韦尔帕克综合癌症中心的研究——一致发现，无味电子液产生的气溶胶具有 lower concentrations of carbonyl compounds（乙醛、甲醛、丙烯醛）在相同加热条件下，与有味产品相比，碳基化合物的生成明显减少。这一减少主要归因于缺乏易热分解的香味分子，它们是碳基化合物形成的前体。This body of evidence has been acknowledged in regulatory frameworks: the FDA's technical review of PMTA submissions has noted that the composition of flavorants is a significant variable in aerosol toxicant profiles, lending scientific credibility to the unflavored segment's health rationale.
六、法规环境：法律如何塑造无调味市场
6.1 美国：FDA、PMTA与调味政策
The U.S. regulatory environment is arguably the single largest external driver of the unflavored market. Under the Family Smoking Prevention and Tobacco Control Act (TCA), all e-liquid products require FDA authorization for continued sale. The FDA has issued marketing denial orders (MDOs) to the vast majority of flavored e-liquid applications, citing insufficient evidence that the flavors' appeal to adults outweighs their appeal to youth.在这一监管压力下，电子液市场经历了显著的口味整合。根据... CDC Foundation's 2024 Monitoring E-Cigarette Trends in the United States Report调味电子烟的销量下降了 67.7% in California following the state's statewide flavored tobacco policy, with a further reduction of 79.1% in the year after full enforcement. This creates direct displacement demand for unflavored alternatives in regulated markets.
China's domestic e-cigarette market is regulated under the GB 41700-2022 National Standard and supervised by the State Tobacco Monopoly Administration (STMA). The standard mandates that only approved flavor compounds may be used in e-liquid formulations, and prohibits the addition of flavorings designed to appeal to minors. Unflavored base liquids, while not the dominant product format in China's consumer market, are commonly used in OEM production environments for clients exporting to regulated international markets.
掌握陈化工艺的化学原理，直接关系到香精浓缩液的配方设计。面向DIY用户的浓缩液，必须经过精心调配以确保品质。 post-mixing stability—— CUIGUAI Flavoring通过40°C加速老化测试和气相色谱-质谱分析（GC-MS）在质量控制中应对这一考量。若欲深入了解风味稳定性与老化化学，敬请参阅我们的技术指南： Why Vape Flavor Fades Over Time (And How to Prevent It).
A growing sub-segment of the unflavored market is interested in "naturally derived" base liquids — PG derived from bio-based feedstocks, or VG certified as organic and non-GMO. As consumer health consciousness intensifies, the provenance and certification of base ingredients will become increasingly important purchasing criteria.能够供应的制造商 certified organic VG, allergen-free PG,以及 documented supply chain transparency将在高端市场中占据竞争优势。
DIY电子液社区正快速成熟。早期的用户从简单的两成分混合，发展成为能重现复杂层次风味的精细调配师。随着社区的壮大与技术水平的提升，对此类高阶调配的需求也在增加。 professional-grade flavor concentrates—— 精确剂量、经过分析验证、专为电子烟应用而配制的产品，将会增强效果。This maturation creates significant opportunity for flavor concentrate manufacturers who position themselves as trusted technical partners to the DIY community, rather than merely product suppliers. CUIGUAI Flavoring's R&D-led approach to flavor development — including GC-MS analytical verification and toxicological review — is directly aligned with this market direction. For a comprehensive overview of flavor profiles and formulation principles, see our resource: Complete Guide to E-Liquid Flavor Profiles and Applications.
十、结语：无调味潮流是值得关注的信号
The "unflavored" movement in vaping is not a symptom of market failure or consumer indifference — it is a coherent, multi-dimensional phenomenon driven by regulatory pressure, scientific awareness, economic incentives, and behavioral psychology. Its growth from a niche curiosity to a statistically measurable market segment with a 9.35% CAGR signals that it deserves serious attention from every stakeholder in the e-liquid value chain.对于香味浓缩液制造商而言，无味基础市场是一个伴随市场，而非竞争者。其增长推动DIY渠道的浓缩液需求，提高基础液的品质标准，并在纯净、功能性与法规合规的交汇点催生新的产品开发机遇。在 CUIGUAI Flavoring我们视无味趋势为电子烟行业日益成熟的象征——而成熟的市场自然要求精良的供应链合作伙伴。无论你是为注重健康的极简主义者、专业DIY调配师，还是遵循法规的品牌开发者而配制，产品的基石皆为基础——基础的品质，决定着你的吸烟体验的优劣。The flavor doesn't begin when you add a concentrate. It begins with the purity of the base itself.
[1] U.S. Centers for Disease Control and Prevention (CDC). "Outbreak of Lung Injury Associated with the Use of E-Cigarette, or Vaping, Products." 2019. Available at: cdc.gov/tobacco/e-cigarettes.[2] CDC Foundation. "Monitoring E-Cigarette Trends in the United States Report." November 21, 2024. Available at: cdcfoundation.org.[3] Mordor Intelligence. "E-Liquid Market Size, Share & 2031 Growth Trends Report." 2026. Available at: mordorintelligence.com.[4] National Institutes of Health (NIH) / PubMed. "The Impact of E-liquid Propylene Glycol and Vegetable Glycerin Ratio on Aerosol Formation." Aerosol Science and Technology, Taylor & Francis, 2020. PMC ID: PMC7171278.[5] Elsevier. "Toxicity of humectants propylene glycol and vegetable glycerin in e-cigarette aerosols." Toxicology Letters, 2025. doi: 10.1016/j.taoxlet.2025.[6] U.S. Food and Drug Administration (FDA). "E-Cigarettes, Vapes and Other Electronic Nicotine Delivery Systems (ENDS) Authorized by the FDA." May 2026. Available at: fda.gov.
