The Yellow Journal / Skin Guide 002
Hyaluronic acid works best when it is treated as one intelligent layer—not a complete routine.
8 minute read · Updated August 2026

Chapter 01
What hyaluronic acid actually does
Hyaluronic acid is a humectant used in skincare to help attract and retain water at the skin’s surface. It does not exfoliate like an acid in the everyday sense, and it is not meant to create peeling. Its role is simpler: support a surface that feels softer, looks smoother and layers comfortably beneath the rest of a routine.
The Yellow by Claudia Hyaluronic Acid Serum uses four forms of hyaluronic acid in a lightweight, fragrance-free base. Different molecular sizes are commonly combined to create a more dimensional cosmetic hydration experience, but the most important measure is still how the complete formula feels on your skin.
The Yellow Rule: hydration is a layer, not the whole routine.

Chapter 02
Damp skin or dry skin?
Both approaches can work. Applying serum to slightly damp skin often gives more slip and makes a small amount easier to spread. Pat away dripping water after cleansing, leave a trace of dampness, then press serum over the face and neck. If your skin is sensitive to too many variables, applying to clean dry skin is also perfectly reasonable.
The step that matters most is what follows. Humectant serum is usually more comfortable when finished with moisturizer, especially in a dry room or air-conditioned environment. Think of serum as adding the water-focused layer and moisturizer as completing the ritual.
Avoid soaking-wet skin, which can dilute the application and encourage rubbing.

Chapter 03
The correct order for layering
Move from lighter textures to richer ones: cleanse, water-based serum, oil serum if desired, moisturizer and broad-spectrum sunscreen in the morning. Use one or two pumps or a small dropper amount rather than coating the skin. More serum can increase stickiness and pilling without adding meaningful benefit.
Allow each layer to settle briefly. If sunscreen or makeup rolls into tiny flakes, reduce the amount of serum first, then test a shorter product list. Pairing the serum at night with Tallow Night Cream creates a simple hydration-plus-moisture ritual; an oil lover can instead add the Bakuchiol Oil Serum.
The best order is the one that leaves an even finish and can be repeated consistently.

Chapter 04
Morning and evening routines
In the morning, cleanse only as much as needed, apply serum, moisturize and finish with sunscreen. Give the routine time to settle before makeup. At night, remove makeup and sunscreen thoroughly, cleanse gently, repeat the serum and finish with the cream or oil texture your skin prefers.
Climate changes the answer. Humidity may make a thin moisturizer enough, while winter air or indoor heat can call for a richer layer. Do not force the same amount every day; skin comfort is useful feedback.
Introduce one new product at a time so you can understand what changes the finish.
Chapter 05
Mistakes that make serum feel disappointing
Common mistakes include applying a heavy layer, rubbing until the product becomes tacky, skipping moisturizer when skin feels dry, combining too many formulas at once and expecting hydration to replace sunscreen. Pilling is often a texture or quantity issue rather than proof that a serum does not work.
If tightness, burning or persistent irritation appears, stop use and simplify. Cosmetic skincare does not diagnose or treat a medical condition. Persistent, painful or inflamed dryness deserves advice from a qualified healthcare professional.
Questions, answered
Frequently asked questions
Can I use hyaluronic acid every day?
Many people use a gentle formula daily, morning or evening. Begin once a day when introducing it and adjust according to comfort.
Does hyaluronic acid go before moisturizer?
Yes. A water-based serum normally goes before cream or oil-based moisturizer.
Can I use it under makeup?
Yes. Keep the layer thin, let it settle and reduce the number of products if makeup pills.
Is it only for dry skin?
No. Dehydration can occur across skin types, including oily skin.