Hyaluronic acid injections have become a highly sought-after cosmetic procedure in recent years, achieving wrinkle reduction, skin rejuvenation, and facial contouring. But how can one maximize results? What post-treatment care is essential? Today, our editor at Public Health Network shares the details~
What types of hyaluronic acid exist?
Injectable hyaluronic acid must be cross-linked.Generally categorized as: monophasic cross-linked and biphasic cross-linked. Biphasic cross-linked hyaluronic acid is further divided into three types: macromolecular, medium-molecular, and low-molecular. Different types should be selected based on the specific area being treated. Macromolecular Hyaluronic Acid Macromolecular hyaluronic acid has the hardest texture and longest-lasting results, making it most suitable for facial contouring procedures like rhinoplasty and chin augmentation.
Medium-molecular-weight hyaluronic acid
Medium-molecular-weight hyaluronic acid has a slightly softer texture and is best suited for soft tissue filling and deep wrinkles. It is therefore more appropriate for areas like tear troughs, cheekbones, temples, and the forehead.
Low-molecular-weight hyaluronic acid
Low-molecular-weight hyaluronic acid is primarily used for full-face dermal layer injections. It replenishes moisture lost in the dermis and repairs damaged skin, providing hydration and skin rejuvenation.
What to Do About Redness and Swelling After Hyaluronic Acid Injections?
Due to hyaluronic acid's high water-absorbing capacity, swelling within 3 days post-injection is normal. Individuals with sensitive skin may experience swelling for 4-7 days. Immediately after injection, apply cold compresses but avoid massage. Refrain from consuming spicy or irritating foods for 48 hours. If redness, swelling, or hard lumps persist after two weeks, consult your injecting physician.
Why does my face bruise after hyaluronic acid injections?
Skin bruising post-injection is a common reaction. This occurs primarily when the needle accidentally hits a capillary in the rich network of blood vessels beneath the skin. Apply ice packs to the bruised area. Bruises typically fade on their own within 4-7 days.
What if my face looks unnatural after hyaluronic acid injections?
Hyaluronic acid is injected into the dermis, subcutaneous tissue, or above the periosteum—not into muscles—so it won't cause muscle abnormalities. When used for large-area filling (e.g., apple cheeks, nasolabial folds, temples, chin augmentation), patients may initially feel unaccustomed or experience a foreign body sensation. This is not due to facial muscle issues.If no other abnormal symptoms occur, the hyaluronic acid will gradually integrate with the skin within one to two weeks, leading to improvement.
Pre- and Post-Treatment Considerations for Hyaluronic Acid Injections
1. Pre-injection precautions:
Before treatment, ensure skin is thoroughly cleansed. Remove all cosmetics and skincare products. Use a facial cleanser with cold water to shrink pores. Apply ice to the face to constrict blood vessels and minimize bleeding.
2. Post-injection precautions:
After treatment, keep your face relaxed and avoid excessive facial expressions. Continue applying ice packs. Avoid exposure to high-temperature environments for at least two weeks post-treatment.
3. Adverse reactions:
Skin may exhibit inflammatory reactions, typically accompanied by tenderness upon pressure, lasting about one week. Temporary swelling at the injection site is normal. Notify your injecting physician immediately if persistent adverse reactions occur.