In this next lesson we will go over the anatomy of the lips, skin, and face to help you understand the different areas of treatment. This knowledge will help guide your consultations, the amount of gel to use, and where to place the applications with your Skyn Hyaluron Pen.

Lips are the main focal point for your lower face. When consulting with your client on their lip enhancements, proportion is key. The lower lip should be larger and protrude out more than the upper lip. The volume of the upper lip should be about 2/3 the volume size of the lower lip. When consulting with your client about a lip augmentation be aware that 30% of the population will have one side of the lip higher than the other. To help maintain symmetry have them give a slight smile showing teeth, so you can note which side rises slightly higher than the other. Use that information when administering the Skyn Hyaluronic Acid gel to provide an even and symmetrical finish.

Body of Lips

The body of the lips are the areas inside of the vermilion border. The vermilion border is the outline of the lips. This is where most of the work is done and the enhancing abilities of the Skyn Hyaluron Pen are shown off. Your aim as the practitioner is to maintain most of the fullness in the two arches of the cupid's bow and in the middle of the bottom lip. The 2/3 rule needs to be in play when you're working on the lips, because the top lip needs to remain 2/3 the size of the bottom lip. It prevents what practitioners call 'duck lips' and nobody wants those. 

Cutaneous Upper and lower Lip

Lips can be broken down into the upper (superior) and the lower (inferior) regions. The cutaneous upper areas are located to the left and right of the philtrum ridge and above the vermilion border. The mentolabial sulcus is the upper chin area, right below the bottom lip. Some practitioners apply HA gel into these areas, but we would recommend finding alternatives to reduce lines in those areas such as the plasma fibroblast procedure.

Oral Commissure

The oral commissure is the corners of the mouth. Clients will ask for hyaluronic acid here to create a fuller corner to coincide with their fuller lips. We typically stay away from this area and will suggest that to our clients. The enhancement of this area should be left up to you and your client. If you both choose to enhance this area it is recommended that you place the Skyn Hyaluron Pen inside the corners of the lip, being careful to only infuse a small amount of product. If you infuse too much into this delicate area it will create a long bottom lip and throw off the proportions of the face.

Cupid's Bow

The cupid's bow is the double curve of the upper lip. The name is from the lip's resemblance to the bow and arrow that the mythical Roman god of love, Cupid holds. The middle peaks align with the philtral ridge and the vertical lines giving a defined bow appearance. Clients often will ask to enhance these areas. When doing so you will place the Skyn Hyaluron Pen as close to the cupid's bow as you can while remaining centered and inside the arches.

Vermilion Border

The vermilion border is the dividing line between the lip and the surrounding skin area. You'll recognize this as the area where lip liner is applied. When giving Skyn Hyaluron Pen infusions place the pen as close as you can to the border. Once HA is applied, you will give a light squeeze to the border to keep the HA within the body of the lip. When doing so you will create a slight protrusion and enhanced border. We recommend doing this technique when working with the upper lip.

Philtrum Ridges

The philtrum ridge, also known as the medial cleft or infranasal depression is the vertical indent located in the middle area of the upper lip. It is associated with youthfulness, but as we age, so does the ridge. This is why some practitioners will apply into the ridges. However, with the hyaluron pen treatment we do not recommended using it to enhance the ridges.


Using nano pressure technology, the pen uses forceful pressure that causes the hyaluronic acid to become extremely small nano-scale molecules that can be inserted through the skin barrier. This flow is diameter 0.17 mm, twice as thin as the smallest insulin needle. The combination of a perfect ratio of crosslinked Skyn hyaluronic acid and the pressure technology used in the hyaluron pen makes for an effective solution for volume, shaping and lifting. 

In the video above we show you the difference between a needle injection and a Hyaluron Pen application. With the needle, the gel or serum is dispersed into a ball like area and takes time to reach the surrounding areas which is why most are left with a bump or lump. What makes the hyaluron pen treatment so amazing, is that the gel or serum is placed within the skin using air pressure and is dispersed over a larger area. This means fewer lumps and less time to expand into the surrounding areas.

As stated earlier, this is a needle-less device so nothing enters the skin besides the gel or serum.


As an aesthetic professional, you will no doubt do many facial rejuvenation treatments for your clients. The main areas of enhancement will be the cheeks, under eye, nasolabial folds, forehead and jawline. These areas will be covered in the next section so that you have thorough knowledge of the anatomy of the face and how to provide the best results for your clientele. 

In learning to use the hyaluron pen, you will only need to focus on the epidermis layer of the skin. Those who choose to specialize in injecting the gel via a needle would be required to learn more about the blood vessels and nerves of the skin, as well as the lower layers of the epidermis. This is a non-invasive procedure where the gel is placed in the epidermis layer, preventing any risk to blood vessels or nerves. In this section you will still learn the anatomy of the skin and the key components of it, however you do not need to dive into the lower layers of the skin.

In this training we cannot emphasize enough how the amount of gel you use is dependent upon the area in which it is inserted. If your client wants more volume, slowly build on the hyaluronic acid gel inserted. Continue to build on the amount you've already placed in the skin and increase the effects in a safe and gradual manner. You do not want to administer too much gel at once. The goal is to keep the effect and proportions natural while avoiding lumps and nodules. If your client is concerned that the result is not as full as they'd like, they can come back at a later time to build off their initial applications. In time, the skin of the area treated will be stimulated to produce more of its own hyaluronic acid and collagen, allowing for longer lasting and more dramatic effects.

You may be asking yourself, "How much hyaluronic acid do I use in each area of the face?" This training will give you approximate estimates and guidelines, but the question can really only be answered by you the practitioner. Start off with smaller amounts and incrementally increase the gel to help your client reach their desired effects. To fill in facial wrinkles you will use anywhere from 0.5ml-2ml placed using several infusions to the areas.

You will never want to apply more than .01 in a single infusion to the face at a time. 

Hyaluronic Acid Gel

The Type A gel can be used for enhancing the lips, moderate to deep wrinkles, and for areas where the client would like increased facial volume. In choosing this type of hyaluronic acid gel, it was important for our trainer and director to find the formula with the most consistent and desirable results. 

Even with a high quality hyaluronic acid gel, technique is essential for a client to get the outcome they are looking for. If you place the gel too close to the surface of the skin, you risk creating the Tyndall effect. This is caused by poor placement in thin or compromised skin, which results in a bluish discoloration. 

Studies have shown practitioners need to assess the thickness of the skin, because you have a higher risk of the Tyndall effect in areas with thin and compromised skin. The three areas studies have found to be at higher risk of it are the nasolabial fold (the lines between the nose and mouth), tear troughs under the eyes, and the smoker lines around the mouth. Using the smaller molecule gel provides greater safety in working  these areas, which is why we offer the Type A gel. 

Being aware of the tendency of these sensitive areas to present complications will help you avoid placing the gel too superficially under the epidermis. Training and placement is key to providing stellar results that keep your clients happy so that they will come back for more and share your work with others. 

The Type B gel is purely for lip augmentation. It has a large molecule which means it will take longer to break down and so it lasts longer than Type A. The larger molecule gives more dramatic lip augmentation results, but should never be used in the face. It is more likely to cause lumps and bumps when used for facial volume.

Below you will find some guidelines for the ideal gel placement areas and recommended amount of gel to use.

Since our gel is certified crosslinked, it is long lasting and has a smooth consistency that will naturally break down over time.

Treatment Areas: 

Type A Gel is ideal for plumping deep lines around the nose and mouth, restoring volume to sunken cheeks or temples, building up the nose bridge and augmenting the size of the lips.

Type B Gel was created specifically for lip augmentation. Its larger molecule would make it unsuitable for facial use. Use this only on the lip area to provide an even longer lasting result than the Type A Gel.

How much to use: 

For lips amounts of 1-2ml per session is recommended. 

Natural results: 1ml

Fuller look: 1.5ml

Pronounced results: 2ml

Type A and B gel is meant to be easily inserted multiple times over various sessions. "Layering," is the term used to describe gradually building the amount of gel and subsequent Hyaluron Pen treatment sessions in order to create a natural and long lasting look. To reduce the chance of over-filling, it is best to use 1-3ml in total of Type A or B gel no less than 3-4 months apart for the first few treatment sessions. Once your client's goals are met for lip augmentation or facial improvements, develop a plan to ensure the enhancements are maintained.


Let's go over everything we have learned in this lesson. It's valuable to review the highlights of recently absorbed information to help the new knowledge stick. We hope you're enjoying the course so far and we'll see you in the next lesson.

What are the proportions for top to bottom lip?

The bottom lip should protrude more and be a little larger than the top lip. It should be a 2/3 proportion. 

What are these different areas of the lips?

The cutaneous upper and lower lips are located to the left and right of the vermilion border.

Cupids Bow is the top part of the lip with the double curve.

The oral commissure is where the top and bottom lips meet in the corners. Try to refrain from injecting in these areas.

The vermilion border is the separating line between the lips and the outside skin.

The philtrum ridges are the two lines that run vertically from the bottom of your nose to the top of your lip, creating a crease.

Which layer of skin do you apply the HA gel into?

The top layer of skin or the epidermis.

What are some examples of where you can use the hyaluron pen on the face?

The pen can be used on forehead wrinkles, crow's feet, marionette lines, nasolabial folds, cheekbones, and other areas. Use the illustration we provided as a reference you can consult as needed.

For facial wrinkles, how much HA gel will you use in a session?  

The amount of gel used depends on the area, but can range anywhere from 0.5ml-2ml. 

What type of hyaluronic acid gel does Skyn recommend?

Type A - Fine Line and Type B - Moderate Hyaluronic Acid Gel 

What is Type A and Type B used for?

The Type A gel is great for medium depth wrinkle lines in the face, filling hollowed out areas of the face and lip augmentation. It has medium viscosity and can be layered in subsequent sessions for a natural and longer lasting result. Type B is a larger molecule that provides a long lasting result but can only be used in the lips.

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