Raw denim does shrink when washed, but the amount and frequency depend on several factors. While a hot wash will cause the most significant shrinkage, subsequent washes typically result in less dramatic changes. Understanding the properties of raw denim is key to managing its fit and longevity.
Raw Denim Shrinkage: What to Expect After a Wash
Raw denim, also known as selvedge denim, is untreated and unwashed denim. This means it retains all the indigo dye and sizing (a starchy substance) from the manufacturing process. When you first wash raw denim, this sizing is removed, and the cotton fibers contract. This process leads to shrinkage, primarily in length and width.
Why Does Raw Denim Shrink?
The shrinkage in raw denim occurs because of the properties of the cotton fibers and the indigo dye. Cotton is a natural fiber that expands when wet and contracts as it dries. The indigo dye, applied in layers, also contributes to the denim’s structure. Washing removes the sizing and loosens the dye, allowing the fibers to relax and shrink.
- Sizing Removal: This is the primary driver of initial shrinkage.
- Fiber Contraction: Cotton fibers naturally shrink when exposed to water and heat.
- Dye Release: The indigo dye can also affect how the fibers behave during washing.
How Much Does Raw Denim Shrink?
The amount of shrinkage can vary significantly. Typically, you can expect around 1-3% shrinkage in length and 1-2% in width. However, this is not a universal rule. Factors like the denim’s weight, weave, and the washing method all play a role. Heavier denim often shrinks more than lighter weights.
Consider a pair of raw denim jeans with a 34-inch inseam. After a hot wash, you might see it shrink to around 33 inches. Similarly, a 32-inch waist could reduce slightly. This is why many raw denim enthusiasts size up to account for this initial shrinkage.
Will Raw Denim Shrink Every Time You Wash It?
No, raw denim does not shrink every time you wash it to the same extent. The most significant shrinkage happens during the first wash or soak. Subsequent washes will cause some minor shrinkage, but the effect diminishes with each cleaning. The fibers have already settled into their new, smaller size.
Think of it like this: the first wash is like breaking in new shoes. They might feel tight at first, but they mold to your feet. Subsequent wears cause less dramatic changes. Similarly, the initial wash is the most impactful for raw denim shrinkage.
Factors Influencing Raw Denim Shrinkage
Several elements contribute to how much your raw denim will shrink. Understanding these can help you predict the outcome and make informed decisions about sizing and care.
Denim Weight and Weave
The weight of the denim (measured in ounces per square yard) is a crucial factor. Heavier denims (14oz and above) tend to shrink more than lighter ones. The weave construction also plays a part. A tighter, denser weave might resist shrinkage more initially but can still contract.
Washing Temperature and Method
The temperature of the water is perhaps the most significant controllable factor.
- Hot Water: Causes the most aggressive shrinkage. It rapidly removes sizing and causes fibers to contract significantly.
- Warm Water: Results in moderate shrinkage.
- Cold Water: Leads to minimal shrinkage. It’s often recommended for preserving color and reducing the initial shock to the fibers.
The washing method also matters. A machine wash with agitation can be harsher than a gentle hand wash or a cold soak.
Dryer Use
Using a hot dryer after washing will accelerate shrinkage. The heat causes the cotton fibers to contract further. Air-drying, especially in a stretched position, can help mitigate some shrinkage.
Best Practices for Washing Raw Denim
To manage shrinkage and preserve your raw denim’s integrity, follow these best practices. The goal is often to minimize shrinkage while still cleaning the garment.
The First Wash: A Crucial Step
Many enthusiasts recommend waiting as long as possible before the first wash. This allows the denim to develop unique fades based on your wear patterns. When you do wash, consider a cold soak or a gentle cold wash in a machine.
- Cold Soak: Fill a bathtub with cold water, submerge the jeans, and let them soak for an hour or two. Gently agitate.
- Machine Wash (Cold): Use a gentle cycle with minimal detergent.
Subsequent Washes: Less is More
For future washes, continue to opt for cold water and gentle cycles. Avoid harsh detergents that can strip the indigo dye too quickly. If you want to encourage shrinkage, a hot wash followed by a hot dryer will achieve this, but do so cautiously.
Hand Washing vs. Machine Washing
Hand washing offers the most control. You can gently agitate the denim and control the water temperature precisely. Machine washing is more convenient but can be rougher on the fabric. If machine washing, turn the jeans inside out to protect the outer surface and minimize abrasion.
Common Raw Denim Shrinkage Scenarios
Let’s look at a few hypothetical scenarios to illustrate shrinkage.
| Scenario | Washing Method | Expected Shrinkage (Approx.) | Notes |
|---|---|---|---|
| First Wash | Hot water, machine wash | 2-3 inches (length) | Significant shrinkage, potential for a much tighter fit. |
| First Wash | Cold water, hand soak | 0.5-1 inch (length) | Minimal shrinkage, preserves more of the original fit and color. |
| Second Wash | Warm water, machine wash | 0.5-1 inch (length) | Less shrinkage than the first wash, fibers have already settled. |
| After Multiple Washes | Any method | Minimal to none | Denim has reached its stable size after initial significant shrinkage. |
Sizing Up for Shrinkage
A common strategy for raw denim is to size up. If you know a pair of jeans will shrink by an inch in the inseam and half an inch in the waist, you might buy a size that accounts for this. For example, if you typically wear a 32 waist and 32 inseam, you might consider a 33 waist and 33 inseam if you plan on a hot first wash.
People Also Ask
### How long should I soak raw denim before washing?
For the first soak, many people recommend soaking for at least 30 minutes to 2 hours in cold water. This helps to remove some of the initial sizing and allow for controlled shrinkage. Avoid prolonged soaking, as it can sometimes lead to uneven fading or damage the fabric.
