Hair slugging: how to do this at‑home nighttime treatment to hydrate, soften, and restore shine to the hair.
After days of sun, heat, the beach, or the pool, hair can feel drier, rougher, and harder to comb. In that context, a hair care trend emerges that proposes making use of sleeping hours to give it an extra treatment: Hair Slugging.
Inspired by skincare slugging, it consists of applying a first hydrating treatment and then a more occlusive product, such as a hair oil or serum, to help preserve that hydration for several hours. The key is not to overdo the amount or choose products that are too heavy.
What Hair Slugging Is and How It Works
The technique is carried out in two stages. First, one aims to hydrate the hair with products containing ingredients such as hyaluronic acid, panthenol, aloe vera, glycerin, plant proteins, or amino acids.
Then comes the sealing step. For this second stage you can use argan or jojoba oils, coconut oil for very dry hair, shea butter, plant-derived squalane, or ceramides.
The goal isn’t to coat the hair with oil, but to create a light layer that helps preserve the hydrating treatment overnight. Therefore, using more product does not mean a better result.
For what hair types is it recommended
Hair slugging is especially interesting for dry, very dehydrated, curly, thick, dyed, or bleached hair, since these tend to require greater hydration input and retention.
In curly or Afro hair it can help maintain moisture for longer, promoting definition and reducing frizz.
On the other hand, if you have very fine hair or a tendency to be oily, the recommendation is to be more cautious. In these cases, the technique can be applied from mid-lengths to ends with lighter textures to avoid hair feeling weighed down or losing volume.
Hair Slugging Step by Step
The routine is simple and doesn’t require a large number of products. The proposal consists of:
- Wash the hair: the technique should be performed on clean hair, especially if styling products or formulas that may have left residues were used.
- Remove excess water: after washing, gently blot with a towel, without rubbing aggressively.
- Apply a hydrating mask: distribute the product mainly from the mid-lengths to the ends and adjust the amount to the hair’s density and length.
- Seal with oil or serum: apply only a few drops of a nourishing product to the mid-lengths and ends.
- Gather the hair gently: a braid or a loose bun can help keep it in place while you sleep. A silk or satin cover or accessory can also reduce nighttime friction.
How Often to Do Hair Slugging
There is no universal frequency: it depends on the needs and the condition of the hair. As a guideline, the stylist recommends:
- Very dry or bleached hair: once a week.
- Dry or color-treated hair: every 10 to 15 days.
- Normal hair: occasionally, for example after vacations, beach trips, or periods of very hot weather.
A sign that you are using too much product is that the hair begins to look heavy, dull, lacks movement, or gets dirtier than usual.
Mistakes to Avoid
One of the main mistakes is thinking that more oil guarantees a better result. In reality, excess can saturate the fiber and cause it to lose lightness and natural shine.
It’s also important to avoid applying Hair Slugging on dirty hair or hair with residue from hairsprays, mousses, or sunscreens, because the technique could end up sealing those residues.
Another key point: do not sleep with the hair completely soaking wet. Keeping it damp for many hours can weaken the fiber and promote breakage.
The idea behind Hair Slugging is simple: hydrate, seal, and let it work overnight. An option to add extra care to hair after summer, without turning the routine into an endless ritual.
