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The Ultimate Guide to Dermal Fillers: Hyaluronic Acid vs. CaHA Fillers

Woman receiving lip filler injection
Lip Filler

Dermal fillers have become a popular solution for those seeking to enhance their facial features and combat signs of aging without undergoing surgery. Among the most widely used fillers are Hyaluronic Acid (HA) and Calcium Hydroxylapatite (CaHA) fillers. In this comprehensive guide, we will explore the differences between these fillers, their applications, and what to expect before and after treatment.


What are Dermal Fillers?

Dermal fillers are injectable substances used to restore volume, smooth out wrinkles, and enhance facial contours. They provide a non-surgical solution to aging skin by filling in lines and adding volume to areas that have lost fullness due to aging or other factors.

Hyaluronic Acid (HA) Fillers

What is Hyaluronic Acid?

Hyaluronic Acid is a naturally occurring substance in the skin that helps maintain hydration and volume. HA fillers are popular because they are safe, effective, and provide immediate results. Brands like Juvederm, Restylane, RHA, and Belotero are well-known HA fillers.

Applications of HA Fillers

  1. Lips: Enhancing volume and defining lip contours.

  2. Cheeks: Restoring lost volume and creating a lifted appearance.

  3. Nasolabial Folds: Smoothing out the lines from the nose to the mouth.

  4. Marionette Lines: Reducing the lines from the corners of the mouth to the chin.

  5. Under-Eye Hollows: Filling in the tear trough area to reduce the appearance of dark circles and hollows.

Calcium Hydroxylapatite (CaHA) Fillers

What is Calcium Hydroxylapatite?

Calcium Hydroxylapatite is a mineral-like compound found naturally in human bones. CaHA fillers, such as Radiesse, are known for their longevity and ability to stimulate collagen and elastin production, providing both immediate and long-lasting results.

Applications of CaHA Fillers

  1. Jawline: Enhancing and defining the jawline.

  2. Chin: Adding volume and improving the shape of the chin.

  3. Cheeks: Providing a natural lift and restoring volume.

  4. Nasolabial Folds: Smoothing deep lines and wrinkles.

  5. Hands: Restoring volume and reducing the appearance of veins and tendons.


Pre-Treatment Instructions

Consultation: Have a detailed consultation with a certified practitioner to discuss your goals, medical history, and the most suitable type of filler for your needs.

Avoid Blood Thinners: Refrain from taking aspirin, ibuprofen, and other blood-thinning medications for at least a week before treatment to minimize bruising unless prescribed by your provider for other pre-existing conditions.

Alcohol and Smoking: Avoid alcohol and smoking for at least 24 hours before the procedure to reduce the risk of complications.

Skin Care: Keep your skin clean and avoid using harsh skin care products that can irritate the treatment area.

Post-Treatment Instructions

Ice Packs: Apply ice packs to reduce swelling and bruising.

Avoid Touching: Do not touch, press, or rub the treated areas to prevent displacement of the filler.

Stay Hydrated: Drink plenty of water to help your body heal and maintain hydration.

Avoid Strenuous Activities: Refrain from intense exercise and activities that increase blood flow to the face for 24-48 hours post-treatment.

Follow-Up: Schedule a follow-up appointment with your practitioner to assess the results and discuss any concerns.

What to Expect During and After Treatment

During Treatment

The procedure is relatively quick, typically taking 30-60 minutes depending on the number of areas being treated. A topical or injectable anesthetic may be applied to minimize discomfort. The practitioner will then inject the filler using a fine needle or cannula.

After Treatment

  1. Immediate Results: You will see immediate improvements in the treated areas.

  2. Swelling and Bruising: It is normal to experience some swelling and bruising, which usually subsides within a few days.

  3. Longevity: HA fillers typically last 6-12 months, while CaHA fillers can last up to 18 months or longer.


Conclusion: Choosing the Right Filler for You

Both Hyaluronic Acid and Calcium Hydroxylapatite fillers offer unique benefits and are suitable for different areas of the face and body. A thorough consultation with a certified practitioner will help determine the best option for your aesthetic goals. By following pre and post-treatment instructions, you can ensure a smooth and successful experience with dermal fillers.


  1. American Society of Plastic Surgeons: Dermal Fillers Overview

  2. Mayo Clinic: What to Know About Dermal Fillers

  3. Healthline: The Best Dermal Fillers for Your Skin


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