Crystal Clear Bar Salt Xtreme Sour Apple E Liquid 10ml

The Crystal Clear Bar Salt Xtreme Sour Apple E Liquid 10ml is a TPD compliant nicotine salt e-liquid designed for adult vapers using refillable MTL (Mouth-to-Lung) pod kits. Available in 10mg and 20mg nicotine salt strengths, it is an adult-only product sold strictly to customers aged 18 and over.

Xtreme Sour Apple combines a crisp, bright apple character with a sharper, more pronounced sour edge than a standard sour apple profile. "Xtreme" is used here to indicate that many adult vapers are likely to find the sourness notably stronger than a typical sour fruit nic salt — it is a preference-based description rather than a guaranteed intensity level, and individual experience will vary.

Key Features

• Bottle size: 10ml
• Nicotine type: Nicotine salt (nic salt)
• Available strengths: 10mg and 20mg
• TPD compliant: Yes
• Designed for: Refillable MTL pod kits and low-wattage devices
• Flavour direction: Xtreme sour apple — crisp apple fruit character with a strong, pronounced sour edge
• Cooling or menthol: Not present in this flavour
• Age restriction: 18+ only — adult product

Crystal Clear Bar Salt Xtreme Sour Apple E Liquid 10ml Flavour Profile

Xtreme Sour Apple is a two-element profile focused entirely on the combination of crisp apple and a sharp, tangy sour intensity. There is no additional fruit, no cooling, and no candy element — just apple and sourness, dialled towards the more assertive end of the sour-fruit spectrum.

• On the inhale: Crisp apple leads — a bright, fresh fruit character that is immediately recognisable and clearly apple throughout the opening of each draw. Whether it reads as a greener, sharper apple or a slightly warmer, rounder variety is not confirmed; the apple character is presented as crisp and bright rather than soft or syrupy.
• Mid-draw: The sour edge develops and intensifies as the draw progresses — a tangy, zesty quality that adds sharp contrast to the apple sweetness. Many adult vapers find this mid-draw sourness is the most distinctive quality of the profile and the element that gives it its energy and impact.
• On the exhale: The sour and apple characters combine on the close — a sharp, vivid finish that many adult vapers who enjoy sour profiles find satisfying and cleanly defined. The exhale is dry and tangy rather than sweet or indulgent.
• Sweetness level: Low to medium — the apple provides a degree of natural fruit sweetness, but the dominant quality is the sourness rather than a sweet profile. Those expecting a sweet apple flavour are likely to find the sourness more prominent than the sweetness.
• Sour or tang level: Strong — "Xtreme" in the name indicates a sourness that many adult vapers find more pronounced than a standard sour apple option. Individual sensitivity to sour flavours varies, and perception of intensity will differ between adult vapers.
• Apple crispness: Prominent — the apple is described as crisp and bright rather than a background note; it remains identifiable throughout the draw alongside the sourness.

Sour intensity varies by user and device — check the current listing before purchasing if a very sharp sour finish is a priority for you.

Coil care note: Tangy and sour profiles may build coil residue over time at a rate that varies between devices and usage habits. Replacing coils when flavour quality drops helps maintain the crisp apple and sour character throughout each pod's life.

Who This Flavour Is Best For

• Adult vapers who specifically enjoy strong sour fruit profiles. Xtreme Sour Apple is aimed directly at those who find standard sour apple options too restrained and want a more pronounced sourness as the defining quality of their nic salt. If you already know you enjoy sour-style profiles and want to try a sharper version, this is a natural fit.
• Those who want apple as a sour-forward flavour rather than a sweet one. The sourness is the lead character here, not the sweetness. Adult vapers who prefer apple to present as a sharp, tangy fruit rather than a soft, rounded sweet note will find this profile better suited to that preference than a standard apple nic salt.
• Adult vapers who find mild or low-sour profiles unsatisfying. Many adult vapers who enjoy sour-style e-liquids find that lighter sour options deliver too little contrast or definition across the draw. Xtreme Sour Apple is positioned for those who want more sourness rather than less.
• Those switching from disposable vapes who enjoyed sour apple-style flavours. Sour apple profiles have been popular in the disposable vape category. Crystal Clear Bar Salts is designed to deliver this style in a refillable 10ml nic salt format at a lower ongoing cost per session. Browse the full Crystal Clear Bar Salts e-liquid range to explore all available flavours.
• MTL vapers who want a non-sweet, non-cooling profile with real intensity. There is no cooling element and no heavy sweetness in Xtreme Sour Apple. For adult vapers who want a clean, sharp sour experience without any warming or cooling additions, this profile provides that directly.

Xtreme Sour Apple is less likely to suit adult vapers who prefer sweet, candy-style, or restrained fruit profiles, those who dislike sour or tangy flavours, or those looking for a cooling or menthol element alongside their apple flavour. The pronounced sourness may also be more intense than expected for adult vapers unfamiliar with "xtreme" sour-style nic salts.

10mg vs 20mg: Which Strength Should I Choose?

Both strengths deliver the same Xtreme Sour Apple flavour — only the nicotine concentration differs. Select the strength that best matches your current nicotine use.

• 10mg/ml — typically chosen by adult vapers who vape more frequently throughout the day, those who have progressively moved towards lighter nicotine concentrations, or those who find 20mg delivers more nicotine per draw than they currently want. Many adult vapers find 10mg comfortable and consistent across longer daily sessions.
• 20mg/ml — typically chosen by adult vapers who vape in shorter or less frequent sessions, those who want a more pronounced nicotine delivery per draw, or those who have recently moved from a product at a higher nicotine level. Many adult vapers find 20mg more satisfying with fewer draws.

No medical guidance is offered. Starting at 10mg and adjusting to match your current nicotine use is a commonly followed approach if you are uncertain.

Best Devices for This 10ml Nic Salt (MTL)

This 10ml nic salt e-liquid is formulated for refillable MTL pod kits — compact, lower-powered devices designed for a Mouth-to-Lung draw style. These devices are well-matched to 10mg and 20mg nicotine salt formulations and produce a tighter, more focused draw than sub-ohm or direct-lung hardware. Using a 20mg/ml nicotine salt in a high-powered sub-ohm device is not recommended and may produce a draw that many adult vapers find uncomfortably strong.

Higher-resistance MTL coils are commonly used alongside nic salt e-liquids in refillable pod kits and suit the lower power output and draw style that a nic salt profile is designed for. Always check your device manufacturer's guidance on recommended e-liquid types and coil specifications before filling, as compatibility varies.

How to Use in a Refillable Pod Kit

1. Check compatibility. Confirm your pod kit is designed for nic salt e-liquids and MTL vaping. Do not use in a sub-ohm or direct-lung device.
2. Fill the pod. Open the fill port and add the e-liquid carefully, keeping below the maximum fill line on the pod. Reseal the fill port immediately after filling.
3. Prime the coil. Allow the filled pod to sit for at least five minutes before the first draw. This gives the e-liquid time to saturate the coil wick fully and significantly reduces the risk of a dry or burnt first hit.
4. Start gently. For the first few draws on a new coil, use shorter inhales to allow the coil to bed in before progressing to full MTL draws.
5. Pace between draws. Allow a few seconds between draws to let the wick re-saturate, particularly on a new coil or when the e-liquid level is running low.
6. Refill before running dry. Top up before the e-liquid drops too low. Running the coil dry damages the wick and typically requires a replacement coil or pod.
7. Store correctly. Keep the bottle upright in a cool, dry location away from direct sunlight. Replace the cap after each use and keep all nicotine-containing products out of reach of children and pets.

Delivery, Returns & Age Restriction

18+ only. This is an adult product. Age verification is required at the point of purchase in line with UK legal requirements. See the age verification page for details.

For current delivery options, costs, and estimated timescales, visit the delivery and shipping page before ordering. Returns eligibility criteria and the process are on the returns policy page.

To compare this product alongside other nic salt e-liquids from a range of brands and flavour profiles, the nic salt e-liquid collection covers a broad selection.

Explore More from Crystal Clear Bar Salts

Xtreme Sour Apple is part of the Crystal Clear Bar Salts range — a collection of 10ml nic salt e-liquids spanning sour, fruit, ice, citrus, berry, and tobacco profiles, all designed for use in refillable MTL pod kits. Whether you want to explore other sour options or try a completely different flavour direction, the full Crystal Clear Bar Salts e-liquid range covers everything available across the collection.

Frequently Asked Questions

What does Xtreme Sour Apple taste like?

Xtreme Sour Apple delivers a crisp, bright apple fruit character with a strong, sharp sour edge that many adult vapers find more pronounced than a standard sour apple option. The apple is identifiable throughout the draw — vivid and crisp rather than soft or sweet — and the sourness is the dominant quality rather than a background note. The exhale is sharp and tangy. There is no cooling, menthol, or additional fruit element confirmed for this profile.

How sour is it — is "Xtreme" an accurate description?

Many adult vapers find Xtreme Sour Apple notably sharper than a standard sour apple nic salt, though individual sensitivity to sour flavours varies. "Xtreme" is used to indicate a more pronounced sour intensity than typical — it is not an absolute guarantee of a specific level, and personal experience will differ. Those who enjoy very sour profiles are likely to find it well-matched; those unfamiliar with xtreme sour-style vapes may find the intensity higher than expected on first draw.

Is it green apple or red apple?

The apple type is not confirmed for this product — it is described as a crisp, bright apple character without specifying a particular variety. Green apple typically reads as sharper and more acidic; red apple as softer and sweeter. Given the sour focus of this profile, the apple character leans towards the crisp, bright end of the spectrum, but no absolute claim is made about which variety it most closely resembles.

What is the sweetness level?

The sweetness level is low to medium — the apple provides some natural fruit sweetness, but the dominant character is the sourness rather than a sweet profile. Adult vapers who are expecting a noticeably sweet apple flavour are likely to find the sourness more prominent than the sweetness throughout the draw. It is a sharp, tangy profile rather than a sweet or candy-style one.

What does "Xtreme" mean in this context?

"Xtreme" is used to indicate that the sourness in this profile is positioned at a stronger intensity than a standard sour apple nic salt. It is a preference-based descriptor — many adult vapers find the sour edge notably more pronounced than typical sour fruit options, but perceived intensity varies between individuals. It is not a guaranteed absolute, and those with lower sensitivity to sourness may find it more accessible than the name implies.

What is the difference between 10mg and 20mg nic salt?

Both strengths deliver the same Xtreme Sour Apple flavour — the only difference is the nicotine concentration. 10mg/ml is typically preferred by adult vapers who vape more frequently or find 20mg more nicotine per draw than they currently need. 20mg/ml is typically preferred by those who vape less often or want a stronger per-draw nicotine delivery. No medical guidance is offered. Matching the strength to your current nicotine use is the most practical approach.

Is this e-liquid suitable for MTL pod kits?

Yes — this 10ml nic salt is formulated specifically for refillable MTL pod kits and low-wattage devices. Higher-resistance MTL coils are commonly used with nic salt e-liquids in this style of device and suit the lower power output and draw style that a nic salt profile is designed for. Always check your device manufacturer's recommended e-liquid type and coil specification before filling.

How long does a 10ml bottle last?

Bottle life is usage dependent and varies based on draw length, frequency, and inhalation style — no specific puff count is claimed for this product. A 10ml nic salt bottle typically delivers considerably more usage than the 2ml capacity of a standard disposable pod, though exact duration depends on personal habits. Adult vapers who take shorter, less frequent draws will generally find a 10ml bottle lasts longer than those who vape more frequently throughout the day.

Compliance & Safety Notice

This product contains nicotine. Nicotine is a highly addictive substance.

Crystal Clear Bar Salt Xtreme Sour Apple E Liquid is an adult product sold strictly to customers aged 18 and over in the United Kingdom. It is not suitable for non-smokers, persons who have never used nicotine, those who are pregnant or breastfeeding, or those with health conditions that may be affected by nicotine use. Keep all e-liquid and nicotine-containing products out of reach of children and pets at all times. Store in a cool, dry location away from direct sunlight; replace the cap securely after each use. No medical or smoking cessation claims are made or implied. Any usage references are usage dependent and are not guaranteed performance outcomes. No absolute performance claims are made.