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Foreo
ISSA™ Replacement Brush Head Cobalt Blue
Foreo ISSA™ Replacement Brush Head Cobalt Blue is a medical-grade silicone brush designed to fit any ISSA™ or ISSA™ mini toothbrush, delivering a gentle yet thorough clean for sensitive gums; priced at $24.99, it’s ideal for daily oral-care routines where durability and hygiene matter.
$24.99
● In stock
Buy at FOREO →Price and availability may change. Click to see current details on FOREO.
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Key features
- Medical-grade silicone for gentle, antimicrobial cleaning.
- Fits all ISSA™ and ISSA™ mini toothbrushes.
- Cobalt-blue color for easy identification.
- Designed to last up to one year of daily use.
- Soft silicone bristles remove plaque without abrasion.
- Snap-on design replaces the head in seconds, no tools needed.
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Pros
- +Soft silicone is kind to sensitive gums.
- +Durable material lasts a full year.
- +Easy snap-on installation, no tools required.
- +Bright color helps spot the head quickly.
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Cons
- −Higher price than basic nylon heads.
- −Silicone may feel less firm to some users.
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About Foreo ISSA™ Replacement Brush Head Cobalt Blue
What is Foreo ISSA™ Replacement Brush Head Cobalt Blue?
The Foreo ISSA™ Replacement Brush Head Cobalt Blue is a detachable cleaning unit designed for the brand’s ISSA™ and ISSA™ mini electric toothbrushes. Constructed from medical-grade silicone, the head offers a soft yet thorough brushing experience that respects delicate gum tissue while still removing plaque. Its vibrant cobalt-blue hue makes it easy to spot in a bathroom drawer, and the silicone material is engineered to retain its shape for up to one year of daily use.
Key features
- Medical-grade silicone — soft on gums, antimicrobial and durable for a full year.
- Universal ISSA™ fit — works with both full-size and mini ISSA™ toothbrushes.
- Cobalt-blue color — bright visual cue for quick identification.
- One-year lifespan — engineered to maintain performance through 365 days of use.
- Gentle plaque removal — silicone bristles clean without abrasive wear.
- Easy snap-on design — replace the head in seconds without tools.
Who is Foreo ISSA™ Replacement Brush Head Cobalt Blue for?
This brush head is ideal for users who prioritize oral-health hygiene without sacrificing comfort. It suits people with sensitive gums, orthodontic appliances, or those who simply prefer a softer brushing sensation. Because the silicone material does not fray, it also appeals to travelers who need a low-maintenance replacement that can endure frequent trips. Dental-care professionals often recommend it for patients recovering from gum surgery or for anyone seeking a non-abrasive daily routine.
How does Foreo ISSA™ Replacement Brush Head Cobalt Blue compare?
Compared with traditional nylon brush heads, the ISSA™ Cobalt Blue version delivers a softer touch while maintaining plaque-removal efficiency. Nylon bristles can become stiff after months, whereas silicone retains flexibility, reducing the risk of gum irritation. In contrast to charcoal-infused heads, this model does not rely on surface coatings that wear away; its performance is built into the silicone matrix, offering consistent results throughout its rated lifespan. Users also report that the silicone surface feels cooler than plastic heads, which can be refreshing during hot summer months, and the head’s flexibility adapts well to the contours of each tooth.
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Best use cases
- →Daily brushing for sensitive gum care.
- →Post-orthodontic cleaning after braces removal.
- →Travel kit replacement for frequent trips.
- →Gentle cleaning for dental-surgery recovery.
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Is ISSA™ Replacement Brush Head Cobalt Blue right for you?
Buy the Foreo ISSA™ Replacement Brush Head Cobalt Blue if you value a soft, hygienic brush that lasts a year without losing performance. It’s perfect for anyone with sensitive gums, orthodontic work, or a preference for silicone over nylon. Installation requires no technical skill—just snap it onto your ISSA™ or ISSA™ mini handle. If you need a more budget-friendly option, standard nylon brush heads are available, though they may need replacement more often. For a premium, non-abrasive experience, this head is the clear choice.
How it compares: Compared with standard nylon brush heads, the ISSA™ Cobalt Blue silicone head offers a softer touch and longer lifespan, while charcoal-infused heads provide surface cleaning but lose effectiveness as the coating wears. Silicone’s durability and gum-friendliness make it a superior choice for sensitive-gum users.
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Frequently Asked Questions
What makes the Foreo ISSA™ Replacement Brush Head Cobalt Blue different from regular brush heads?
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The Cobalt Blue head is built from medical-grade silicone rather than traditional nylon, which gives it a softer feel on gums while still breaking down plaque. Its silicone composition resists bacterial buildup and maintains flexibility for up to a year, unlike nylon bristles that can become stiff and frayed after a few months.
Does the silicone material affect plaque removal effectiveness?
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Silicone bristles clean effectively because their flexible tips can adapt to each tooth’s surface, reaching between teeth and along the gumline. Laboratory tests show that silicone heads remove comparable amounts of plaque to high-quality nylon heads, while offering a gentler experience that reduces irritation for sensitive mouths.
How long can I expect the brush head to last with daily use?
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Foreo rates the brush head for up to twelve months of regular twice-daily brushing. In practice, most users see the silicone retain its shape and cleaning performance for the full year, provided the head is rinsed after each use and stored in a dry environment.
Is the Cobalt Blue head compatible with all ISSA™ toothbrush models?
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Yes, the Cobalt Blue replacement head snaps onto any ISSA™ or ISSA™ mini handle. The universal attachment mechanism is the same across the product line, so whether you own the original full-size brush or the compact mini version, the head will fit securely without additional adapters.
Can I use this brush head if I have braces or other orthodontic appliances?
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Can you use this brush head with braces? Absolutely. The soft silicone bristles glide over brackets and wires without snagging, making it a safe choice for orthodontic patients. It still reaches between teeth to dislodge food particles, so you maintain oral hygiene throughout treatment.
How much does ISSA™ Replacement Brush Head Cobalt Blue cost?
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ISSA™ Replacement Brush Head Cobalt Blue is $24.99 at FOREO. Prices may change — click through to FOREO for the latest.
Is ISSA™ Replacement Brush Head Cobalt Blue in stock at FOREO?
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Yes, ISSA™ Replacement Brush Head Cobalt Blue is currently in stock at FOREO.
Are there coupon codes for FOREO?
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Yes — Love Those Deals currently tracks 1 active FOREO coupon. See the coupons section on this page to copy a code before checkout.
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Specifications
- Brand
- Foreo
- Category
- Cosmetics
- SKU
- F3421
Last updated May 14, 2026